Ryuujo hat looks somewhat alike with Ooshio and Arare hats. so Ryuujo is an Asashio class.
Plus her skirt has suspenders, so when she's not wearing her jacket she looks like she's dressed in an Asashio uniform.
Is he playing with everyone?Ah! U-chan just remembered something she needs to do, so she's going to go back to her room, pyo...!?No way! It's not like that'd be happening, pyon!Hah! Could it be that the Mutsuki-class has engendered yet another catastrophe...?Even so, it's pretty lively out there, isn't it?