Responses
He is still a tiny human, I think it’s better to wait a bit it might hurt a lot but :(( HE IS A TINY BABY I DOKT KNOW
But seiya literally said he wants to keep it a secret from Tenma his whole life... I mean understandable to not tell the kid if he's still tiny. That would cause trauma and bad memories. But what if Tenma turns 18?20?25?30?... Idk.... maybe this will come as issues to be resolved in future chapters? Haha.
Truth
It's kinda bothering me that Seiya doesn't plan on telling Tenma who his mother is and that Seiya isn't really his biological parent. I mean, Tenma has the right to know. It isn't like Seiyas sister abandoned the angel.