The truly mutual love between Soko and Minori leads them to somehow achieve the challenge of "No Kissing for 1 Month." Soko's affectionate teasing escalates even further! Then, in spring, Soko advances to the second grade of elementary school. Amidst this, they hear a rumor about a new first grader who has two mothers…!? A runaway older sister lolicon comedy, Volume 6!!