Kyoko Takanashi (27), who works at a travel agency, has been in a sex friend relationship with her boss Kei Hirose (34) for a year. She likes Mr. Hirose. Meanwhile, she comes as a promising newcomer, and she ends up working as an educator for Ryosuke Kondo (23). ? The love triangle that ensues and the entwined passions of each of them... "Hey... will you stay with me until the morning?" "I'm not drunk at all. I like my seniors." Sweet love with pure juniors. I can't believe I have to choose one... The story with an unknown ending is now opening.