Rintarou and Natsu have been childhood friends who are inseparable. Even though they are in high school now, Natsu still gets easily emotional, and Rintarou is always sympathetic towards him. Natsu shares with Rintarou about a female stalker he has, and he requests Rintarou to pose as his partner. Although Rintarou seems unsure, he agrees to protect his friend. But as they keep up the act of being a couple, Rintarou starts to feel attracted to Natsu, and things get steamy between them. Rintarou becomes overwhelmed and unsure of what to do, since he's never seen this side of Natsu before.
