The Golden Week had begun... At that moment, a senpai who had not been seen for a long time suddenly appeared in front of Shizuka and her son. Senpai said she would go on a trip with her friend, so she made Shizuka take care of her son. Her son's name is Seva. Unlike his mother, he is an unexpectedly good boy.
As Shizuka's work deadline was approaching, Showa instead took care of Shizuka during this Golden Week.
After all, will Shizuka be able to successfully meet the deadline, and what will happen in those 7 days... Also, will Showa-kun be able to find out her "secret"...?