How to Beat a Dual Girlfriend

How to Beat a Dual Girlfriend is a Manga/Manhwa/Manhua in (English/Raw) language, PSYCHOLOGICAL series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.com fastest updating comic site. The Summary is

Shindou Yuuichi gets a girlfriend on his first day of high school. The only problem is that she used to bully him mercilessly in middle school and he can't figure out why she's suddenly decided to like him. The next day she seems like an entirely different person. That can't be right, can it?