Megami Saikou is a Mary Sue !
First off, everyone loves her because she’s the student council member and is the heir to a company. But those are the only two positive qualities I have seen from her. But even if she is an authority figure, how does that make people like her? Just because you are the student council president that doesn’t mean you are instantly a good character.
I don’t know about you guys, but one of my favorite anime of all time is Yu-Gi-Oh! DM. In that show there is a character named Seto Kaiba. Like Megami, Seto Kaiba also has a company. So he’s a likable character right? Everyone loves him right? Wrong. Kaiba is one of the biggest assholes in the show and wants everyone to know that he’s better than them. Yandere Dev, just because a character is in an authoritative position that doesn’t mean everyone respects/loves them.
I also would like to point out that she doesn’t seem to have a personality other than “I’m the student council president UwU ! “ She doesn’t have any motives or other personality traits. Plus she has no chemistry wth Taro as well.... (none of the rivals have chemistry either though as well)