It doesn’t seem like yuri/shoujo ai to me, but the mangaka did tag it under the GL genre, so who knows...... Hiyama obviously likes Sayoi, and Satsuki is currently cheering them on. There also seems to be a misunderstanding and people now believe that Satsuki and Hiyama are dating. As somebody who picked this up for the GL/yuri, I’m skeptical of where this is going to go.