I should have realized it wasn't Miku last chapter, not enough filling...
Who reprimanded Yuri on the last page? Can't be Satou, because he calls her -chan. The teacher would have said it harsher, I assume. I'm just wondering how audible Yuri's mumbling is in the classroom. Imagine the whole class sitting there in silence, internally placing bets on the fight between possessive Yuri and threesome Yuri. Meanwhile Satou is staring out the window, pondering about what to talk about with Suzuki during lunch.