[Dotechin Tengoku (Ryuuki Yumi)] Ane Ushi Hentai [どてちん天国 (りゅうき夕海)] 姉牛

(C92) [Dotechin Tengoku (Ryuuki Yumi)] cow cow time

(SC2018 Autumn) [Dotechin Tengoku (Ryuuki Yumi)] Yome Chichi Iyashi (THE iDOLM@STER)

Ushiushi Festival

(COMIC1☆11) [Dotechin Tengoku (Ryuuki Yumi)] M to P (THE iDOLM@STER)

(SC45) [Dotechin Tengoku, L.L.MILK. (Ryuuki Yumi, Sumeragi Kohaku)] Ushisawagi

(C69) [Dotechin Tengoku (Ryuuki Yumi)] PSYCHO ROCK cow-version 2002-2004

(COMIC1☆12) [Dotechin Tengoku (Ryuuki Yumi)] Love Mako (THE iDOLM@STER)

[Dotechin Tengoku (Ryuuki Yumi)] MILK THE COW

(C61) [Dotechin Tengoku, Ryuu no Kinyoubi (Ryuga Syo, Ryuuki Yumi)] LV up Koushinkyoku (Dragon Quest IV)

(C94) [Dotechin Tengoku (Ryuuki Yumi)] Yome to Boku Returns (THE iDOLM@STER)