My wife's hospitalized mother-in-law

It's getting warmer during the day, but one day the cold winter still remains... Koichi catches a cold as the seasons change. Moreover, this time he spread the cold to his wife Natsue, and Natsue ends up getting her tonsils and is hospitalized for a long period of time. Koichi's stepmother, Mirei, comes to her. Koichi is taken care of by Mirai, who has met for the first time in a while and is delighted to forget the pain of a cold. The next day, he felt better, but in order to be taken care of by Mirai again, Koichi decides to take a break from work...