Honestly I don't think it matters if the child ever finds out the uke is his mother. As long as he's with his parents being raised in a healthy stable environment. That's all that matters. It probably won't be in the next side story. But if the child finds out who the uke is putting 2 and 2 together eventually, When he gets older, the child probably won't care. Because the uke has been raising him & has been there since he was young, just like a real mother would. So in the end it doesn't really matter. The uke will always will be the child mother figure. Whether they're connected by blood or not.
Honestly I don't think it matters if the child ever finds out the uke is his mother. As long as he's with his parents being raised in a healthy stable environment. That's all that matters. It probably won't be in the next side story. But if the child finds out who the uke is putting 2 and 2 together eventually, When he gets older, the child probably won't care. Because the uke has been raising him & has been there since he was young, just like a real mother would. So in the end it doesn't really matter. The uke will always will be the child mother figure. Whether they're connected by blood or not.