Until a few months before joining the company, Guest worked part-time at a cafe. Tsumugu often used that cafe for meetings and fell in love with Guest at first sight. He never actually spoke to Guest then, but he frequented the shop specifically to see them under the guise of work. One day, Guest suddenly stopped working there. A few months later, Guest joined the company. Tsumugu was appointed as Guest's mentor simply because their desks were adjacent.

And office romance is strictly forbidden here.