Kimihito bekommt noch einen zweiten Drohbrief. Bei der Jagd nach dem Täter stellt sich heraus, dass beide Drohbriefe von verschiedenen Absendern stammen.
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 e
Toujours à la recherche de l'expéditeur de la lettre de menace, Kimihito sort avec les filles de l'équipe des MON pour tenter de le piéger. Un mystérieux personnage semble les suivre, cette fois-ci.
普段から公人とモン娘たちがデートしている様子を見せつけられ、腹に据えかねていたMONメンバーは、警護ついでに公人と偽装デートをすることに♡ 普段は見せないプライベートの顔に、公人も一緒に楽しんでいると、真犯人と思われる人物が直接アプローチを仕掛けてきた！？
公人が首のない女の子を連れて帰ってきた。首を落として困っているところを見かけ、つい拾ってきてしまったという。ラクネラに留守を任せ、一同は女の子の首を探しに夜の公園へ向かう。ようやく見つけた首は、自らを「死の地上代行者・デュラハン」と名乗り、とうとうと語りだすのだった――。
키미히토를 위협하는 수수께끼의 D를 찾기 위해 몬스터즈 뉴로는 돌아가며 그와 데이트를 한다. 그리고 마나코와 데이트 중에 수상한 그림자를 발견하는데.
Las chicas del escuadrón MON deciden que es tiempo de que ellas también tengan citas con Kurusu, pues están cansadas de ver que las otras chicas se diviertan tanto. Pero Kurusu recibe una misteriosa y romántica (sí, romántica) segunda carta de amenaza. Las cosas no resultarán del todo bien cuando una extraña chica pierda la cabeza.
Kimihito riceve una seconda lettera minatoria e i membri della squadra MON, stufe di vederlo godersi gli appuntamenti con le ragazze, decidono che è arrivato il loro turno!
