Something tells me, but Yuuki better stay away from Igarashi, but who am I kidding...
Kaname isn't googling Igarashi symptoms, but Mizuno had a clue, low self-esteem is nicely healed by "you're fine as you are".
While the rest of his buddies aren't even hand holding, Kaname is already did 1st and 2nd base lol
Tsuruta found out accidentally about their Kaname and Igarashi, that was a set up and he failed miserably. I'm not sure one who got rejected would keep her mouth shut...
Them being officially dating wouldn't be bad, Igarashi would be one more step to being bit normal so there's no point of hiding...