Omega Suguruchan, a sorcerer born in the heian era who got eternal youth from a cirse mishap, gets passed around between the three big clans as a glorified incubator. An open secret, most of the head clans of the big three were descended from him, either as their mother or grandmother. Sorcerers never trily cared about the incest as long as it birthed stronger sorcerers and better cursed techniques. The second Satoru was born, he was already given top priority to breed Suguru once he presented. Suguru being 17(0) meeting the new 10 year old Six Eyes, Satoru growing up knowing that no matter what happens, Suguru will always be his. Im not too sure where i was going with this but i hope its not too confusing. English isnt my first language, sorry if i was unable to convey my thoughts very well😓