my sisterinlaw's jealousy, the unforgivable love.

Ritsuko (Tomoko NATSUME) of OL lived with her mother, Shizue (Junshi YAMASHITA). That Shizue suddenly declares a remarriage. i hope for shizue's happiness all the time... Ritsuko also had a lover, Kawashima (Anji Atsunatsuki), who was involved in the marriage premises. However, she was unable to get married again. On the other hand, Ehime (Tetsu HORIMATSU), a student who worked at a convenience store frequently used by Ritsuko, was fond of Ritsuko. Even though she was talking to her lover, Misato (Sanna KOJIMA), Ritsuko remained in her mind. the day i first met shizue's marriage partner... there's eiko... a school student who asks for her lover and herself on the assumption of marriage... this decision is shaken between the skewed love! what?