Mako is extremely upset when her son's childhood friend, Kentaro, presses her. - She was aware that Kentaro had special feelings for her from an early age. - But I thought I would forget that once I became an adult. - ``I've decided for a long time that Mako-san would be my first partner!'' Knowing that Kentaro was serious about those words, Mako's heart wavered. - And the moment Mako became aware of Kentaro as a man, she felt a heat grow deep within her body...