Hey!! 😆 Hmm Arc 1? You should see the credits for the first time (after the big-long ending sequence, etc.,), then Iggy wakes up again, has the deja vu-esque call with Hunar, and then you're given the option to call one of the friends. That's the "official" end of Arc 1, as each of these choices will then begin a new arc. Now I'm curious about what you've read that you haven't seen 💦 There really isn't anything "missable" in the game. There's the various deaths you can get, of course—if you make the right choices, you won't get a death scene, so technically you can miss the death scenes, and there's a few choices that lead to slightly different convos/turns of events (there's a choice on the pier in Arc 2, for example, that will change the convo that happens in the inn). But nothing major that will give you entirely new scenes, etc. (at least not yet).
Omfg though please sleep HAHAHAHA! Though that makes me really happy to hear all the same 💕 I'm really glad you're enjoying it!! I went all-0ut with that freaking ending sequence for Arc 2 lol. BUT I HOPE YOU'LL LIKE ARC 3. It's a bit of a wild ride. And yes ffs somebody needs to care for and protect the ratman from all harm, it's t-t-true, he needs love. It would honestly prevent so much 😭