Hirama joined Roshigumi with Serizawa Kamo in 1863. Hirama family was retainer of Serizawa family. He ran away at the night of Serizawa's death and returned to Serizawa village.
References
- Shinsengumi Zentaishi Tettei Guide (新選組全隊士徹底ガイド) Maeda Masaki
- J-Wikipedia Hirama Jusuke