Here's some more tropes for Sorin Mireu.

Nice Guy - To Audrey, mostly.
Troubled But Cute
Tall, Dark and Snarky - And Tall, Dark, and Handsome, according to Audrey.
Dark Is Not Evil - This and Light Is Good.
Casting A Shadow - Now coupled with Light Em Up.
Yin Yang Bomb - With Earthshine.
Heroes Prefer Swords --> Katanas Are Just Better
Blade Below The Shoulder - His katar.
Samurai - Trained himself to be such.
Sibling Team: When teaming up with his brother or sister.
Superpowered Evil Side - Demin.
Split Personality
Talking to Himself - More this than Themself, what with aforementioned Split Personality.
Split Personality Merge - Inverted, they got torn out instead.
Battle and Official Couple - With Audrey, obviously
Relationship Upgrade - Two of these. Also Truth In Television.
Future Me Scares Me - Ties into Evil Me Scares Me
Ret Gone - Aforementioned future.
Iron Woobie - Let's just say his past before Interfering, what he went through with his two girlfriends, and his badassness make him this by default.
They Do - Not yet, but he's pretty damn close to this with Audrey.