The death threat was sent from a Dullahan.And, much like the other girls, she'll end up living with Kimihito.
A Dullahan and a Minotauros will end up joining Kimihito......if the death threat is from an unrelated monster. After all, the mangaka has already made a side series with each of the present monster girls from Miia to Rachnera in addition to a Dullahan and a Minotauros.
The Next Girl will be a Dullahan, or possibly a MinotaurosBecause as pointed out earlier, all the girls that are ending up with Kimihito are the ones from the mangaka's previous Hentai stories, and these are the two Monstergirls that haven't been seen/mentioned at all.
The sender of the threating letter is Kimihito's D(ad)Just because of its wording: It doesn't say anything about "don't marry X" or "don't marry a Cute Monster Girl", merely "if you marry someone I will kill you." That, and his parents are yet to make an appearance.
Kimihito is not really humanAfterall, has he even mentioned having a family? And if he only works part time normally, how did he afford have such a large, fancy house, even before Miia moved in? And while it could all just chalked up to Rule of Funny or Rule of Cool, he's still demonstrated feats of superhumanity, taking hits from the girls and getting right back up, pedaling a wheel paddle boat fast enough to actually ram another ship, hijacking a truck and getting it under a bridge in under the span of five seconds. To quote The Jackie Chan Adventures: "No way he's human"
D is not trying to kill Kimihito. D is trying to save him.In the original shorts, the Dullahan came to foreshadow the protagonist's death and ended up living with him, getting into a relationship with him, and telling death to leave him alone—with her scythe. In this incarnation, D has visions that marrying any one of the girls will end up horribly for everyone, so she's trying to prevent it from happening in the first place.
The series takes place in the Rosario + Vampire universe, and Tsukune started the Exchange ProgramAm I the only one who thinks the two series are similar?
A Dryad will appear.Cause why not, we already have a lot of other Monster Girls from Classical Mythology origins.
Mero will become a villain, temporary or recurring.Her realization that being on the losing end of a Tragic Romance is horrible will cause the seeds of jealousy to sprout between her and Miia, causing them to have a falling out. Mero will slowly become a Yandere: from there she may serve as a villain for one chapter before having a My God, What Have I Done? moment, or she'll leave the harem for good and free up the group for new Monster Girls, while she becomes the arc villain.
The Dullahan people mentioned above will be yet another Red Herring.Seriously, how long can Okayado drag this mystery out?