Help. Forgotten title.

[AfterMidnightMoon]

One of the female character's catchphrase is poyo. She ends her sentences with poyo and even replies with just poyo. When she goes to school, she goes straight to the infirmary due to her anxiety. She has a female friend that checks on her every day.

 

[Bainhardt]

Manga title is Joshi Kousei ni Korosaretai. Hasn't updated in a little while, but I don't think it's fully dead.

 

[AfterMidnightMoon]

Goodness! I was trying to remember the title for two weeks. Thanks!