Japan Trip with the Boss

Haruto Tanaka has been crushing on his boss, Genkei Concord, for many years, but doesn't have the courage to do anything about it. Haruto is also often nervous around Genkei because the man can be cold at times. Hence, he's apprehensive about the Japan trip with Genkei because he's worried his crush will be discovered. Later on, he finds out Genkei also has feelings for him. The two start dating. About halfway through the trip, Genkei's biological mother, who abandoned him as a baby, gets in touch with him. She lives in Japan and wants to meet him. He is simultaneously angry and sad about the situation. When the three of them meet up, the situation goes from bad to worse when Genkei's mother mentions something that triggers painful childhood memories and he snaps. Can Haruto and Genkei salvage whatever remains of their trip while working on their relationship?