SeiTenshi are a special type of Volks Tenshi that are not available to be sold anywhere. Rather, Volks gives them away at events as a special prize for event-goers, usually via lottery or bingo, so that the recipients are chosen entirely at random.
They are slightly smaller than YoTenshi, and have a non-jointed torso. Like YoTenshi, they have resin wings but unlike YoTenshi, the wings are permanently attached and cannot be removed. They each come with a random pair of eyes and random fur wig, and their resin wings come in white, yellow, pink and blue. Most SeiTenshi have different faces; there are a variety of headmolds available.
The first three SeiTenshi were released at Dolpa 12, and were given away as a part of the lottery drawing held at the end of the event.
Since then, SeiTenshi have been given away at every Volks Dolpa, and at other big events, such as Tenshi no Sato events, the Volks Cruises, and Volks' events at the LA Mansion in America. Usually around 5 SeiTenshi are given away at an event. The largest known giveaways of SeiTenshi are 10, at the LA Sumika Opening Event, and 20, at the Hometown Dolpa Kyoto 4 Pre-Event. It is very rare to come across a SeiTenshi on the 2ndhand market as Volks gives them away as special gifts and frowns upon reselling them, and most owners believe it an honour to receive one and will not part with it.