This Denkipon guy was born from a strange red crystal that caused his muations- red, hypnotic eye and red hair. Despite that, Koro isn't marked as "weird" in Qumrah Village where he lives. Also, he was trained as a Yariki by Kua Toeki- a noble spear-bearer in Qumrah.
He's also a member of Hato Zumen's crew and he specializes in spear skills. Koro also once was marked by Ravenous as a crime- just to be swindled by the corrupt judge. Happily, nothing serious happened to Koro.
When he fights, he has a keen eye in the spear-fighting. However, he may still make some errors due of his short period of training.
Koro is a jolly, optimistic and brave eyeball, but sometimes he prefers to stay alone, mainly when he's under stress or sad.