Shinseki No Ko To O Tomari Dakara De Na Gat Repack !full! Link

The prose blends lyrical descriptions of the sea and weather with intimate interior monologue. Dream sequences during otomari are rendered in surreal imagery, juxtaposing past and present. The "repack" metaphor is used both literally (reformatting the ritual) and figuratively (repackaging identity for external consumption).

The phrase you're referring to, " Shinseki no Ko to O Tomari Dakara de Na Gat shinseki no ko to o tomari dakara de na gat repack

If you remember more letters or the actual game title, post in r/visualnovels or use the VNDB search by tags "sleepover" + "relative." Happy (and safe) searching. The prose blends lyrical descriptions of the sea