Sekaiichi Hatsukoi Movie: Yokozawa Takafumi no Baai

After the rejection of his first love Yokozawa Takafumi goes out drinking all by himself. The next morning he wakes up naked in a room with Kirishima Zen, the editor in chief of Japun, unaware of what transpired the previous night. As if handling the rejection from Takano Masamune wasn't bad enough, now he has to deal with the capricious Kirishima who uses his embarrassing pictures to blackmail him into going out with him.

Synopsis from Anime News Network