From Cat Paws Scans:

“It made my heart flutter for a bit, I think.”

Rui Takanashi dreams of wonderful campus life.
One day, the girl he's interested in calls him to meet to confess her feelings! Cheerfully heading there, all Rui finds is his childhood friend, Koga Roku. Looking back, Roku has kept on interfering with Rui's important moments. Like stealing the girl Rui liked or kissing him just to mess around…
When Rui finally couldn’t take it any longer, the only thing Roku said was just these unexpected words: “But I’m the one who likes you longer, Rui.”

I never knew this side of my childhood friend!!
The exciting love life of Roku, who can’t be honest at all, and Rui, who is a beginner in love, starts now!