There's tons of MUGEN vore/ryona videos on youtube, just a small sample
youtu.be category @Dronelisk
imgur.com category @shinxanta
imgur.com category @BadNeko99
Mugen ni Hamete Kureru Lio Fotia | I'll Do It to You for Infinity, Lio Fotia! (Promare) [02]
imgur.com category @STMIpornaccount