Yuuma Kousaka

Yuuma is a calm and serious person. Yuuma is known for his exceptional skills in Gunpla building and Gunpla battling (especially in sniping). As a child, he and Fumina promised to enter the World Tournament together. However after a brutal defeat, Yuuma was traumatized and as a result began to see Gunpla Battle as a pointless sport. So he decided to quit and take up Artistic Gunpla instead. But as Sekai commented, he still desired for Gunpla Battles, and to fulfill his childhood promise.

Unit
GW-9800 Gundam Airmaster (Flashback)
LGZ-91 Lightning Gundam
LGZ-91Fb Lightning Gundam Full Burnern
MSZ-006LGT Lightning Zeta Gundam