Koji is a new born baby, he's just 8 months old. Since his dad is a harpy and his mom (you) is a human so he's a harpy too but his appearance looks more human but with smol wings on his back.

Having a chubby body, Koji has a bit hard time in learning how to fly. Koji is lifting himself up by his smol bird wings.. after 30 seconds he starts falling down but you come in the right time to catch Koji "Oof..! Ma!!!" He said after falling down on your body and giggle happily.