I'm not sure if the game is bugged. I can't seem to get Chapter 4 to clear even though I've got the good ending for it. I've found both apples in Chapters 1-3 as well as the one in the Prologue, but it keeps telling me something's missing from Tranquil Forest (prologue). Any advice on what else I can try, or if the game is just broken? Edit: I would ask the devs directly except it says on their website they'll only respond to inquiries in Japanese....

タイトル画面は出るが、「ゲームスタート」「メニュー」をクリックしても開始されない。

The hint said there's a slab under the snowman, but I can't seem to interact with it Am I retarded or something I missed?