Black Blood Brothers Season 1 Episode 12

For The Eternity of Our Bloodline, I Devote Everything of This Blood

Jirou defeats Cassa, and later on finds out that in the eleventh yard lies the remains of the kowloon king. Then he is told to be Mimiko's guardian. A bit after Jirou tells Mimiko to not tell Kotarou abiout him being the reincarnation of the sage, Eve. Jirou seems to have gotten a job, and they all live happily ever after!