Moving in With My Friend and Her Lover

Ryouhei's a simply country boy moving to Tokyo to begin his college education. Though he can't find a place to stay in the dorms, an old childhood friend offers up a spare room of the apartment she shares with her boyfriend. It's been a long time since they've seen each other. He was her first crush and he had his own feelings for her at some point. What happens when they meet once more?