A half-human, half-youkai shopkeeper and was the only visible male in the Touhou Windows series, beginning from his debut in Curiosities of Lotus Asia until Unzan's debut. Has the ability to recognize the name and purpose of an item at a glance, but lacks any apparent fighting abilities.
He runs the "Kourindou", an antiques shop near the Forest of Magic stocked with items found in the human world outside Gensoukyou, sometimes supplied by Yakumo Yukari. An old acquaintance of Kirisame Marisa, who frequently steals from his shop - a habit emulated by Hakurei Reimu.
Rinnosuke makes a cameo in the background of the Human Village stage in Hopeless Masquerade, his first official in-game appearance of any kind.
- Touhou Wiki: http://en.touhouwiki.net/wiki/Rinnosuke_Morichika