Canis: Dear Hatter, Volume 2 (manga)

Kutsuna and his crew's showcase at New York Fashion Week was a huge success. While there, Ryou encounters an old friend of his -Chase- who informs him that the mob boss he thought was dead is still alive. Hoping to face his past, Ryou decides to stay behind in America, meaning Katsuna would now be on the other side of the planet.

On the outside, Katsuna seems perfectly calm on his own in Tokyo, but beneath the surface...