Crimson Prince, Volume 2 (Crimson Prince #4-8)

Turns out demon prince Koujirou Sakura is still a "prince" even on Earth, making all the girls squeal at his good looks and stellar grades. But with popularity comes unwanted attention, and the battle with the heir to the wolf clan attracts the eyes of an angel. Now with these two as classmates, Koujirou renews his focus on his mission, only to discover that the human who will threaten the future of the demon realm might not be who he expected...!!