High School DxD Title: I'm more than happy to become one with you.
Series: High School DxD
Characters: Issei Hyoudou and Rias Gremory
Location: Issei's room inside of the Hyoudou Residence (After Renovation)
External
Example for Rias' happy look:
Image
Plot: After all of these crazy scenarios, including all of these battles, Issei and Rias decide to take it easy. With the other girls of Occult Research Club are busy, those two are alone. Giving Rias a perfect opportunity to have sex with Issei. Of course, Issei feel the same way. Inside of his bedroom, Issei and Rias make love as to have sex in this somewhat of the lotus/lap love position like this
Image ( including the fact Issei's penis is sexing (fucking) inside of Rias' vagina). Only with Issei sucking one of Rias' breasts and touches her other one with his hand while Rias uses one of her hands to pet/touch Issei's head while she uses her other hand to place on Issei's hand where he touches her breast. Try to be sure that Issei's face is revealed. Make sure that Rias' breast(s) and tit(s) are visible. Rias must have a real happy look on her face because she's doing it based on her own free will with such joy because she's become one with the man she loves in Issei. In other words, Rias Gremory happily moans during sex. Both characters are completely naked with any clothes on.