Kojirase Shachoushitsu - Getsujou Shachou, Ryou Omoi desu!?

In middle school, he and Rei were both friends. But you can leave them fighting over teasing your classmates. A few years later, the two reunited, and Li hired Len as their secretary. They spend the same time again, and they're still feeling each other, but they can't confess! The fate of an adult's frustrating love affair is when people don't want to let go again!?