Owarenakatta Koi no Hanashi

I wish I could redo that disastrous first night. I've been thinking about it for a long, long time. When photographer Mibu wakes up, he finds himself in an unknown hot spring inn.

"It's been a long time."

Tsutsumi, a classmate whom he had a crush on in college and had drifted apart since their failed first night together is there... He tells him, "I heard you were in a slump, so I brought you to our inn when you were drunk.'' If they could get one more chance to be together... A genius photographer in a slump and his former best friend. The love that has been smoldering for a long time is now starting to move again...

(Source: Kaiohsha, translated)