MikaYuu: Innocent Pillows And Passion

When the two childhood friends Mikaela and Yuichiro get together for their first sleepover in ages, Mika wakes up to find Yuu in his arms asleep.

mikayuu GT "protector"

mika makes a deal with a demon and has yu shrunk so he can protect him from both the human raise and the vampires. but having a guardian vampire has its troubles