Kizuna: Bonds of Love (6 volumes)
Published in Japan as simply Kizuna, or 'Bonds'

Manga-ka: Kazuma Kodaka

What CPM/BeBeautiful says: "Ranmaru and Kei have a strong and passionate relationship built on years of trust, sacrifice and love. When the mysterious son of a Yakuza boss starts to have designs on Ranmaru's affection, tempers flare, and hidden emotions rise to the surface. Will Ranmaru and Kei's love for each other be able to survive this difficult test, or will the emotional conflict finally come to a head?" Both the manga and anime are 18+ and feature violence.

Censorship: one underage boy love kiss omitted.

Kizuna DVDs [18+]