the number of chapter really messy. ┑(￣Д ￣)┍

Yep hope they double check the names cause I feel like the missed something. The disjointed story line is normal but the hmm Rhythm? feels off.

I think it's because the series numbering is messed up. There's chapters, extras, omakes, and backstories. It's a bit intermixed and then because OPM is a webcomic and published you have chapters split up up into parts.