"The Precocious Young Girl is in a Long-Term Growth Phase!?" On Christmas Eve, the thirty-something teacher Minori finally shares her first kiss with first grader Soko-chan. Christmas party, a first date on the rooftop in school uniforms, and the first shrine visit... Soko-chan's requests for kisses just won't stop!? A reversal of roles: "Onee-loli" → "Loli-onee"!? The hottest and most outrageous Rampaging onee-loli comedy, Volume 5!!