
Yagen Toushirou (薬研藤四郎) is a main character in Katsugeki TOUKEN RANBU and 2 other titles, voiced in Japanese by Seiichirou Yamashita. The series' music includes "Katsugeki/Touken Ranbu Opening Full『Soma Saito - Hikari Tatsu Ame』", "Katsugeki/Touken Ranbu Ending Full『Kalafina - Hyakka Ryouran』".