The rose prince (RWBY harem x male oc x genshin impact harem)

an infant boy was at the doorstep of the Rose/Xiao Long/Branwen family. This boy is none other than the prince of the kingdom of Arcadia, a country next to menagerie. They have deep connections with the faunus of menagerie and the chieftain of Kua Kuona. as it turned out, the prince is said to be engaged to the chieftain's daughter but an unfortunate incident occurred, leaving the queen of Arcadia to flee the kingdom in order to protect her son. The prince however was taken in by the family who adopted him and raised him as their own. The boy was loved by them and he dedicated his life to be a huntsman, so he attended beacon academy with his adopted sisters. But what would happen if he's reunited with the girl he's supposed to marry? But more importantly, what would happen if other girls fall in love with him, including his own adopted sisters, mother and aunt?