People who can't read shit sure love to talk about things that happened in their imagination right?
Sigh.
Ryo didn't advance much because MC was able to thwart his plans.
Sure, Ryo fucked the VP(who was a tomboy prince type but a Masochist too) making her quit the stuco in order to get to the Prez after taking over the position of VP to himself, but that's where he got stuck, the secretary and the treasurer from Stuco along with MC happened to be there when Ryo was dog fucking the VP.
Secretary (flat chest with glasses) had an admiration crush for VP so she left in tears and now hates Ryo deeply.
Treasurer (big tits drill hair) thought Ryo was a cute boy at first but now she got the ick from him and acts formally to him and sticks around secretary and MC in their free time.
Prez is pretty close to prevent Ryo from laying his hands on other girls and protag was able to make the rest of the stuco to be aware that Ryo was a scumbag. In the main timeline Prez became his sex pet because she got overwhelmed by Ryo and his thug friends, in this time she's on a deal with him to let other girls go though it's obvious he isn't so willing to do his part of the deal. She isn't to be trusted much for the time being IMO.
The nurse is a non character so who cares.
Sumire is the second main girl and MC has taught her to be aware of Ryo. She also became friends with him already, she in fact is MC's real beat friend.
The next arc was Hinata the karate girl, here MC bonded with her and learned some martial arts knowing Ryo would approach her MC taught her to be less on airhead also hags around with the MH to protect her.
Ryo got her in the original game because Hinata was too oblivious to things like sex and dating but was curious about it (she was a an egirl showing gravure on a anonymouse accoutn and got blackmailed by Ryo), MC taught her more self awareness and bonded as friends though just like Hinata she developed feels for MC.
Also in order to pass unnoticed MC has been crossdressing as a girl which Ryo immediately set his eyes on MC lmao.
Back to MC he is crossdressing because he wanted to approach the former VP who left because of Ryo, thus current character arc is because MC wants info about how Ryo was able to pass her barriers so easily.