Sts V0.17.5 Cookie Jar -

Open the phone and at the top 7–8 times.

The Cookie Jar is located in the of the game. While scenes are typically earned by completing character routes, players often use a hidden debug menu to unlock everything instantly: STS v0.17.5 Cookie jar

Some save files from versions older than 0.17.5 may not correctly register unlocked scenes in the Cookie Jar due to changes in the game's internal tagging system. Summertime Saga: New Locations and Updates Revealed Open the phone and at the top 7–8 times