Coming relentlessly, melting relentlessly, panting relentlessly. "Old man, do you like it when ...
- Author: Aoin Kiu, Haruyama Moto, Hotoya Tama, Hon Toku, Ike Reibun, Kunihara, Niyama, Riiruu, Rocky, Sakishita Senmu, Tanagawa Mimi
- Genres: Yaoi
= couples who are blood-related or know each other somehow otherwise
additional are the series in the following lists:
http://www.mangago.com/home/mangalist/6968/
http://www.mangago.com/home/mangalist/7543/
http://www.mangago.me/home/mangalist/8347/?filter=&page=2 (just the Kuroneko series)