New Game
bronze · unmissable
Start game
Select New Game on the title screen and confirm the start. The trophy arrives as the opening begins.
Published guide
Trophy guide
Once Again
A complete PS5 platinum route with both opening answers, the timed maths and picture puzzles, and all three film choices.
PS5
- Trophies
- 18
- Difficulty
- 1/10
- Completion time
- 1–2 hours
- Playthroughs
- 1 story run + short chapter replays
Before you play
- Known trophy issues
- None known
- Missable trophies
- None known
- Chapter select
- Available
- Postgame cleanup
- Available
Seven optional trophies can need chapter replays. The maths and picture puzzles have time limits, but missed attempts do not prevent story progress.
Your route to completion
Start a New Game and follow the Roadmap stages in order. These are route stages, grouping the game's summers around the trophy opportunities. Read each stage before its bedroom interactions, then follow the linked trophy names for the exact actions. Trophies is the direct lookup when you only need one solution.
I recommend one uninterrupted story run with Sure at the opening and the red film in the fourth summer. Prepare for the maths exercise in the second summer and the picture puzzle in the third. After the ending, use Chapters on the title screen to collect the other opening answer and the two remaining films. Those replays only need to reach the relevant choice.
Nothing is permanently missable. If either timed puzzle takes too long, finish it for story progress and replay that summer for the trophy. There are 18 trophies in this PS5 list, all in the base game, with no difficulty selection or online requirement. The guide preserves the hidden story trophies, but the route and puzzle instructions still reveal gameplay details.
The opening and first summer
Start New Game, choose Sure for The Adventurer and continue into the story. Leave Theorist for the short prologue replay after the ending.
The game progresses through interactive comic panels. Select speech bubbles and arrow prompts, and drag objects when a panel asks you to move, uncover or wipe something. A tap and a drag do different jobs, so keep the interaction held while moving an object. Before the timed puzzles, use these opening scenes to get comfortable with the pointer.
Finish the prologue and first summer. Neither needs a timed action.
The Adventurer
gold · optional
Select Sure
In the prologue, advance the opening conversation until you are asked whether you believe the story about travelling back in time. Select Sure, the left answer. The trophy unlocks immediately.
You also need the opposite answer for Theorist. Finish the story on this choice, then return through Chapters → Prologue to collect the other answer. No second full playthrough is needed.
Theorist
gold · optional
Select Ridiculous
From the title screen, choose Chapters → Prologue. Advance to the opening question about believing in time travel and choose the negative answer on the right. In English gameplay it is labelled Nonsense. The trophy description calls it Ridiculous. Both refer to the choice opposite Sure.
Wait for the trophy before leaving the chapter. If you chose Sure instead, replay the prologue and pick the other answer. This does not require reaching a different ending.
Spoiler: reveal trophy
Prologue
silver · unmissable
on the summer I turned 10.
Complete the prologue after either opening answer. Continue through the eye-opening interaction and the first bedroom scene until the story moves into the first summer.
Spoiler: reveal trophy
The 1st Summer
silver · unmissable
Summertime’s over.
Finish the first summer's photography lesson and its closing panels. This is an automatic chapter award, with no optional challenge attached.
The second summer: maths
Read Math Master before opening the bedroom notebook's arithmetic exercise. Keep 8, 0, 7 ready and complete all three answers within the shared 15-second limit. Then continue the chapter normally. If you miss the time, use a chapter replay for another attempt.
Spoiler: reveal trophy
The 2nd Summer
silver · unmissable
But all I’ve found is a reminder of how empty it is.
Finish the second summer. The maths puzzle is required for progress, but its time limit only affects Math Master. A slow answer sequence does not block this chapter trophy.
Math Master
gold · optional
Complete a math problem in 15 seconds
Near the beginning of The 2nd Summer, inspect the notebook in the bedroom and reveal its writing. Be ready before advancing to the arithmetic pages: all three answers must be completed within 15 seconds in total.
Drag the correct number tile into each dashed answer box, then move straight to the next problem:
- 8 + □ = 16: use 8.
- 0 ÷ 3 = □: use 0.
- 9 × □ = 63: use 7.
The trophy appears after the third correct answer if you were quick enough. Completing the questions slowly still advances the story. If that happens, return to the title screen and choose Chapters → The 2nd Summer for another attempt. Practise moving and releasing the number tiles, then retry with the sequence already in mind.
The third summer: the picture puzzle
Read Puzzle Master before using the bedroom computer. The jigsaw has a 60-second trophy limit on PS5. Learn the arrangement first if you want to avoid a retry. Once it is complete, continue the photography lesson and the rest of the summer.
Spoiler: reveal trophy
The 3rd Summer
silver · unmissable
I fell in love with photography.
Finish the third summer's photography outing and closing music panels. You can earn this story award even if the earlier jigsaw took too long for Puzzle Master.
Puzzle Master
gold · optional
Complete a puzzle in 60 seconds
Near the beginning of The 3rd Summer, examine the notebook by the bedroom desk, reveal its text and drawings, then interact with the computer's search box. Complete the picture puzzle that follows in under 60 seconds.
Drag the scattered fragments from the right into the incomplete illustration on the left. Rebuild the boy upright in the centre, with his feet toward the bottom and the dark oval behind him. Use the black circles and short lines around the edges to align the remaining fragments. Release each piece over its matching gap and move to the next one once it stays in place.
I recommend looking at the arrangement in the video before starting a timed attempt. It shows the exact placements. The trophy appears when the final piece fits if you met the time limit. A completed picture without the trophy means you should replay Chapters → The 3rd Summer and try again. You do not need to restart the whole game.
The fourth summer: choose a film
At the film selection, choose the red roll for Red film, then finish the chapter. This is one choice per visit. We'll replay the beginning of this summer twice after the ending for Yellow film and Pink film. The colour does not require a separate full-story route.
For the photography scenes, adjust the focus until the subject is sharp and move the exposure sliders until the camera symbol becomes dark and selectable. Select that symbol to take the shot.
Spoiler: reveal trophy
The 4th Summer
silver · unmissable
I saw the beauty of a summertime sunset.
Complete the fourth summer's outing and final music interaction. Any of the three film choices lets the story continue. The other two films can be collected by replaying this chapter.
Red film
gold · optional
Select red filter
In The 4th Summer, finish the bedroom's notebook and lens-cleaning interactions, then continue through the birthday transition and open the door. At the camera conversation, select the camera symbol, open the camera and pull out its old film. Three coloured rolls appear on the table.
Choose the red roll on the right. The trophy arrives when you select it, before completing the photography outing. If you took another colour, replay Chapters → The 4th Summer and return to this selection.
I recommend finishing the chapter with this film on the first run. After the ending, repeat the beginning of this chapter for Yellow film and Pink film.
Yellow film
gold · optional
Select yellow filter
In The 4th Summer, finish the bedroom's notebook and lens-cleaning interactions, then continue through the birthday transition and open the door. At the camera conversation, select the camera symbol, open the camera and pull out its old film. Three coloured rolls appear on the table.
Choose the yellow roll in the middle and wait for the trophy. If you have already selected a different roll, return to the title screen and replay Chapters → The 4th Summer. You only need to reach the choice again, not finish the whole story.
Pink film
gold · optional
Select black and white filter
In The 4th Summer, finish the bedroom's notebook and lens-cleaning interactions, then continue through the birthday transition and open the door. At the camera conversation, select the camera symbol, open the camera and pull out its old film. Three coloured rolls appear on the table.
Choose the pink roll on the left. This is the roll associated with the black-and-white filter mentioned in the official description. There is no fourth black-and-white roll to search for.
The trophy unlocks at the selection. If you picked red or yellow, replay Chapters → The 4th Summer to choose pink.
The later summers and ending
Continue through the remaining summers in order. There are no more optional trophy actions after the fourth summer, so follow the story through to Finale. An award after one of the later summers is a chapter milestone, not a signal to stop.
After the ending, return to the title screen's Chapters menu. Replay the prologue for the other opening answer, then the fourth summer for each unchosen film. Finally, retry either timed puzzle if its trophy is still missing.
Spoiler: reveal trophy
The 5th Summer
silver · unmissable
Have I grown wiser?
Continue through the fifth summer, including the camera-repair sequence, and finish its final panels. This chapter contains no additional optional trophy.
Spoiler: reveal trophy
The 7th Summer
silver · unmissable
The memories rolled on and on.
Complete the seventh summer and its film-strip memories. The gap in the trophy names is intentional. There is no sixth-summer trophy to find.
Spoiler: reveal trophy
Summer, Years Later
silver · unmissable
Fireworks no longer feel lonely.
Finish the chapter called Summer, Years Later and continue when its story award appears. This is not the end of the game, so keep going for Finale.
Finale
gold · unmissable
Complete games
Keep playing after Summer, Years Later through the final summer and the closing sequence. Open the last package and letter, then interact with the cassette player's play control. Let the ending finish. This unlocks the story-completion trophy without requiring the optional challenges first.
Cleanup
Once Again
platinum
Get all the other trophies
Earn the other 17 trophies. The story supplies ten, while the remaining seven cover both opening answers, the two timed puzzles and all three films. Use the chapter replays in Cleanup for anything missing. There is no separate DLC trophy pack.
Sources
- Exophase: Once Again PS5 trophy list · PS5 trophy names, descriptions and completion scope.
- Kevin Chen, Seeking Tech: PS5 trophy guide · Timed challenges and chapter-replay cleanup.
- Almagest: console platinum walkthrough · Story progression, film choices and replay route. Japanese text.
- FelicesEpicThug and Vanom: achievement guide · Arithmetic questions and opening choices. PC achievement names and puzzle timing differ.
- Shira: PS4/PS5 platinum walkthrough · Visual help for the choices and timed puzzles.
- AMATA Games: Once Again press kit · Console edition details and official promotional artwork.