Naoki Kuki

九鬼 修季

Naoki is Fukaya's older brother, who also went abroad and just came back. Quite a calculating, ruthless individual, as the elder son of the Kuki family he should become the next Viscount in title. [Spoiler] He also, like his youger brother, had a relationship with Masahiro before he went away, though Fukaya doesn't know about it. [/Spoiler]