Shimotsuki Koushirou

Koshiro isthe name of Roronoa Zoro's teacher and Kuina]]'s father. He has his own Dojo near where Zoro grewup and he wastheone who trained him. he is typically seen in flashbacks. However, recently, in Chapter 440, he makes a brief appearence when another student ofhis asked if he was really Roronoa Zoro's teacher.