Just something for you, Rai fans, too keep an eye out for.
Spoiler for slighty NSFW:
This is a doujin drawn by the
iyou, a group of independent artists. As far as I know, they are the only ones out there who make Lost Colors-related doujins and this is their most recent work. The main story is about a multi-pairing of Rai with Kallen, C.C. and Kaguya, while at the end there is a small bonus story between Luluko and Villetta. The doujin was released in paper at the end of last year, but has yet to make an appearance in digital format.