Ruby Jackson♂

Ruby is a care-free chivalrous thief who is now a lone hunter against the angels. He acts rather fun and playful, speaking in the quick Kansai dialect, but also has a serious side, especially when it comes to his quest for revenge against Carrol, his half-brother, who he hates since Carrol betrayed his trust in the past and gave him the scar across his chest. He is a good friend with a sense of humor, but he is also a strong fighter. He either becomes an ally to Alex or Platina, and whichever side he chooses, Carrol will be on the opposite side.

[From Boys' Love Games Headquarters]