Rin and Yukio - (This is for both the Okumura twins)

Sharing a history with Night (darkasnight), Yukio (doctor_dragoon) and Shiro (paladaddy), Rin and Yukio were young children when their mother simply vanished one day. Their father had never been present in their lives at all, leaving them in a situation where they were forced to fend for themselves. Their only real protection were the fire and ice powers they developed shortly after their mother vanished. Living on the streets was difficult for both of them, though, and Rin was often put in situations where he had to defend and protect his younger, somewhat weaker little brother. Eventually, though, they were discovered by a kind priest who saw their plight and took them in.

The two actually grew up well under the care of the priest, even when another was added to their little family. Yukio excelled at his studies where Rin struggled and eventually dropped out. The idea of being a hero never really occurred to him, but his strong protective instincts and desire to save the weak and downtrodden often get him in to situations where acting as a hero is the only choice...

Rin's powers are Fire based, and similar in design to Mariko Yashida from the Marvel Universe. Yukio's ar Ice based.