The game crashed for me when I opened Anton's room door myself & Sasha & Johan showing up talking to me. After it crashed, I just kept passing the days until the MC gets mad & says how he shouldn't be there & hasn't crashed yet.
There are plenty of games out there that crash intentionally, usually story related. (i.e. the character has power outside of his game/world). Some examples of this are Undertale and I believe DDLC does it too with monica.