Frustrated because of their repeated failure to uncover the mysterious "D", who has sent a second and more threatening letter, the MON members (minus Doppel, who isn't interested) decide to take matters into their own hands and have Kimihito date each and ALL of them in one day! First, Tionishia nearly kills Kimihito by dragging him (literally!) off to different shops, including a dress shop where even the largest size proves too small for her, but Kimihito's revealing that he can expertly alter normal clothing to fit liminals wins her over. Next, Zombina drags Kimihito off to a zombie film; later, when her hand comes off and he uses his sewing skills to reattach it, she is impressed (as well as by his seeing her as a girl and a person rather than a "monster") but in order to tease him deliberately detaches a breast and gets him to sew it back on as well! The last "date" is with a very self-conscious Manako, who becomes flustered by his being able to look her straight in the eye. The "date" is interrupted by Manako spotting a shadowy figure following them, and all three MON girls team up to apprehend the stalker, who is indeed "D" but revealed to be Doppel, who sent the first letter as a joke ... but not the second, as Kimihito finds out when a scythe is pressed against his throat by a mysterious girl with purple skin and dressed in black! Later that evening, the girls are shocked when Kimihito brings home a headless girl, totally freaking Miia out! Kimihito, Cerea, Papi, Mero and a very reluctant Miia search the nearby park where the head rolled into; the head is eventually located and actually talks to Kimihito, admitting that she sent the second letter and asking him to restore her to her body! The conversation is interrupted by the jumpy police officer, who totally freaks out upon seeing Kimihito holding the head! Thanks to some unexpected and unintentional help from Papi, the gang gets away and returns home with the head. Once she and her head are restored to each other, the girl reveals herself as a dullahan, a reaper of souls, and that she has come to claim a member of the household who "is on the verge of death" ... Kimihito!