Shima Nishina

Nishina has short dark-green hair, purple eyes, thick eyebrows and a toned body.

At school, she wears a short-sleeved shirt under a cardigan and a vest on the outside, along with a red bow tie and a miniskirt.

Nishina is a rich and multitalented high school student who is extremely popular among girls. Moreover, she is a mangaka whose group has been making a well-known manga series; a fujoshi and a otaku, who has a library filled with books, novels and comics; a figurine collector; and a cosplayer who makes her own costumes for cosplaying.

When she first met the other characters, they assumed she was a boy. However after finding out she was a girl, they no longer saw her as a threat. She was Kae Serinuma's first kiss, and made it known that she was just as serious about her as the others.

Since meeting Kae at the Comiket Festival, Nishina has been attracted to her, and currently competes against the other boys to win Kae's heart. Despite her competition with the boys, however, Nishina often joins the boys in situations where Kae is in trouble. For example, they have worked together to stop Mutsumi Kazuma (Asuma Mutsumi's older brother) from pursuing Kae and to stop Asuma himself from confessing his feelings to Kae.

In addition, Nishina is very sharp, as shown when she confronted Yuusuke Igarashi and pointed out that he only likes Kae for her looks rather than accepting Kae for who she is.

Her exact sexuality is unknown, but she is presumably lesbian or bisexual. However, she seems to heavily prefer girls as she spends most of her time surrounded by them and the exception to this is when she is with Kae, who is usually accompanied by her male suitors as well.

(https://watashi-ga-motete-dousunda.fandom.com/wiki/Shima_Nishina)