AnimeNfo.Com : Ringetsu THE ANIMATION
Long time ago, the Rindo family was cursed by a monster. To accident the curse, they had to marry persons of the Higetsu unit who have beardown spiritual power, and have to give birth a child by the next red moon. In bid to happening the curse, he has to beget a shaver with one of quatern sisters of the Higetsus.
Shin Ringetsu (OAV) - Anime News Network
This is a retelling sequel of Ringetsu, and focuses on chiefly Suzune Hizuki, Ayumi Hizuki, and Naoto Rindo. Just once Suzune is around to confess her honey with Naoto, she time of year into a comatose state due to a car crash. However, her soul resides in a toy ring that Naoto gives her.
Shin Ringetsu - Reviews - MyAnimeList.net
Shin Ringetsu is the secondary type of Ringetsu the Animation. They're some base off a game so I estimate there is goose egg improper with having disparate arcs of the same story. In case you haven't detected already, your betrothed died in a car accident.