They're not playing rock-paper-scissors, they're playing グーパージャス (グーmeaning rock/clenched fist and パー meaning paper/open hand) which is a game where you split into 2 groups based on what you threw. For example fuyuki and reiko both threw rock so they're in a group together and yuuki threw paper...
will edit in background text and sfx on the weekend.
Sypnosis:
Through a chance encounter, Kurimoto Shigure crosses paths with a girl named Amamori Junna.
As they bond over books and J-rock, Shigure begins to see a different side to the usually detached Junna, one that is needy, clingy, and...
The aoribun at the end is apparently a line from Baki, not someone outing themselves… I think.
I’m only writing this because I'm not familiar with it myself, so I might translate it wrong.
Sorry for the delays;; BUT good news! I have the next 7 days off so i'll try to speed through 31 and 32 and draft up the tl for the rest of the next volume to ts later.