Bonus pic: Ruka Sarashina [Rent a Girlfriend] (Patreon)

Tons of good stuff in this one! 

Ruka persuades Kazuya into tying her up in order to see if she can increase her heartbeat... It's safe to say that it was a success! ;)

Sorry for the delay, I was contemplating on adding a topless version or not and decided that I should!