Regarding otoha's reaction

Maybe it's just how I see it but I think the reason why otoha reacted as such to hazuki being an alpha is because he was suprised to see an actual happy, healthy, and fuctional family with male alpha and omega. The way he looked at them when they were going home made me think that he remembers his brother and his brother's boyfriend from them. Maybe it's a sentiment he felt that he doesn't need to worry much for his brother's relationship for it could hopefully end like that.

Aside from that, I also infer that he has a slight enviousness with them as some might already know, he did not come from a very loving or healthy family. So seeing the family being fuctional handling 3 kids, he might be longing for that or hopes that he or/and his brother can have or experience a healthy family/ household similar to them.

I love reading the comments after each new chapters to see how people think or feel about them. And from the look of it, many are having the same conception regarding otoha's reaction to hazuki and his family, which I think are just misconceptions. Although I could be wrong, for now, this is how I interpret his reaction to hazuki being alpha(and the family). Regardless, I hope we can see some background or explanation with that on further chapters to enlighten everyone of his thoughts and feelings.