Manga / Hekikai No Ai ON

Tatsuya Tsugawa's parents die in an accident. One week after the accident, he has inherited millions of yen and is now starting high school. He tries to follow his father's last words about being a man of high caliber. A little while later, Tatsuya tries to rescue a girl, Seine Miyazaki, from being bullied. She coldly rebuffs his attempt and claims that she likes being bullied. He still tries to help her despite the fact she told him to leave her alone. It turns out that Seine is immortal, and she kills parasitic bugs that control humans with a snake named Aion that devours them.

Hekikai no AiON is a 2008 fantasy and horror manga by Yuna Kagesaki, who is also known for Sakura no Ichiban! and Karin. The series is serialised by Dragon Age. The manga finished with 11 volumes in October 14th, 2012. Three volumes of the series was translated in english by Tokyo Pop under the name Aion before it eventually closed its North American publishing division.

Not to be confused with the game Aion.

Tropes this series provides are: