Kiss Him, Not Me 10

Hey, Kae here! After confronting my feelings and Mutsumi-senpai reassuring me to take my time, things have calmed down again.

Shima-chan and I are super pumped to meet the voice actors of our beloved Akane and Master, but at the event, something shocking happens. It turns out that Akane is none other than my childhood friend, Tah-kun!
 
Though we haven't seen each other in forever, he transfers to my school and asks for my support. I don't see why he can't join in on the fun! The others don't seem too happy, though. Before long, I'm worried, too, because Tah-kun is weak and gets sick almost every day. 
 
I'm ready to do whatever it takes to help a friend, but why does everyone else seem so wary of him? Even Mutsumi-senpai is on guard! Is there something I don't know about Tah-kun?