Despite kobeni's skill in battle she has a very timid demeanour and is often shy in social situations, she scares easily and is terrified of devils. There had been talk of kobeni's sexual history and it was said she is an amazing cocksucker, because of her personality she is already the submissive type and sucking cock is often considered one of the deepest forms of worship, so it's no surprise that she'd be good at it. Kobeni ran into a devil on her way home and was sick of being terrified, so she got down on her knees and pulled out his dick. After some discussion they formed a contract and she sucked his dick, in exchange for power and protection she agreed to suck his dick at any time and in any location.