itch.io

You need both of Natsu's plushies as well. One is in Fuyu's room, one is in Maeno's- if you want a convenient guide on all the endings, https://www.scribd.com/document/793893675/Zeno-Remake-English-Walkthrough this one is good, even if it's not up to date with the proof read ver

go into the itch io app and right click the game and there should be a 'check for updates' button

Felt tense the whole time I played
Loved it :)

Alt and enter then? Or f6