Oh mah lawd, cute Riko isn't as good as tomboy Riko. Also Riko is now my waifu.
This scene had me crying, especially when Maki started singing:
Looks like shit just got serious at the end with the teacher finding out Sayo has a boyfriend. But by the looks of things from the next episode preview Maki will save the day... she's shaved all her hair off and gone full male mode this time.