Hachiman gets a figurine of Reimu Hakurei as a last attempt in trying to fit in with the society... Yet, he didn't specify which society.
After a near death experience, and meeting a certain Youkai sage, Hailey Potter, the girl who lived, finds a new family in the mysterious residents of the Yakumo household. Hogwarts is not ready for this new breed of Snake, who cant even be called human anymore (Genderswaped Harry, because a male protag in a touhou story is ridiculous, they don't even look good in floppy hats!)
Not all monsters are born, some are made by their environment the same is true for the grand nemesis of the Hakurei Clan. Follow the talented Magician Mina Magatsuki (Sort of OC) as she faces hardship after hardship alongside the 4th Hakurei Shrine Maiden, and her rebirth as the Vengeful Spirit, Mima.