From Naono Holics:

A scheduling error at a business partner's company reunites the two childhood friends, Kai and Masa. But their third childhood friend, Jun, is not there...

She and Masa have divorced.

Kai, normally disinterested in romance, sees for the first time a glimmer of hope for his lifelong unrequited love towards Masa.

Masa, for his part, seems to use every opportunity to spend time with Kai, but he also seems to have things left unsaid with Jun.

How will the three of them navigate their old friendship and their uncertain futures...?