Albireo is a teacher of swordplay. One day, when he and his company were visiting a neighboring town and they witness an assault case there. Together with his fiancee Fiona, his childhood friend Marina, his housemaid Helena and his friend Tia; they decide to search for the culprit. However, they don't know that there is a big conspiracy behind it.

"I'll protect you whatever happens."

A bittersweet love story now starts...

[Edited from ErogeShop]