[That may be unfortunately necessary, cuz that tail is fueled by anxiety!]

E-Even so... Even so! You shouldn't have to get sick just to be happy.

[Yuuto leans forward just slightly. He's still shy. And he understands where Nen is coming from. When he argues against it, Yuuto isn't trying to deny why Nen would want to try other foods. He's looking for a compromise.]

Anytime you want to try something with dairy, um... L-Let me know! Let me know, and I'll research how to replicate it in a way that won't make you sick. You should be allowed to enjoy life, Nen!