Ei is a typical schoolgirl who works hard in both academics and social like. Hangs out with her friends alot and always at the top10 highest score in exam with grade level 

Ei has everything, looks beautiful, she's intelligent, has many friends and get many guys to confess to her but rejects them anyway 

But Ei acts very friendly to everyone except to her crush who's Ei trying to act cold to him and acts she doesn't care yet acts tsundere with him and she tries to win him over by her affection