you need ending 2, you need to pick the choices that keep lake closed off from lion and rikka (but dont reject lion’s lesson), then when the moment of telling them about syun comes, you’ll have a new choice
Omg I just got the true ending!! I sobbed so much but it was so worth it. This game is honestly so so so good is deserved to be famous. The art, the story, the writing, it's literally perfect in my eyes. had me sobbing like five times (probably more, actually) and I'm definitely going to obsess over this and re-play it over and over. Actual masterpiece, so happy I got to play this!