This patch was made for the packaged version of Koiyasumi which includes the summer and winter sides (コイヤスミ パッケージ版).
https://vndb.org/r87764
Do not use with “Koiyasumi ~Yuudachi ni Nureta Osananajimi~” (コイヤスミ ～夕立に濡れた幼馴染み～).
https://vndb.org/v31434

This patch only covers the summer side of Koiyasumi.
Place “update1.ypf” in the game’s installation folder.

Enjoy!

Please report bugs and typos in our Discord server.

Tested with https://sukebei.nyaa.si/view/3633964