If you're looking for anime similar to Seven Mortal Sins: Tsumi no Kokuhaku Dennou Grimoire!, you might like these titles.
The anime's story is set in both a celestial realm of angels and demons, as well as Nippon Cultural Broadcasting in the mortal realm. The angels, who use the power of love to protect the peace of the Earth, have their sight set on the "Love Nights!" radio program, so they send rookie angels to Nippon Cultural Broadcasting, and end up fighting the demons that face them. Morikubo, Yoshino, Fukuyama, and Suwabe play the angels and demons in conflict, while Yonaga plays the goddess in the celestial realm who stands neutral in the conflict.
Issei, Rias and the rest of the gang continue to have a variety of misadventures with plenty of bountiful breasts to be exposed along the way. Whether they're transporting to an uninhabited island to sunbathe in revealing outfits, accidentally turning Koneko into a pervert with personality-changing tea, or getting a chest workout while making udon dough from scratch, these high school demons have plenty of fun with their friends.
The otome game centers on a human who is selected to become an exchange student at RAD, a school for demons. Awaiting the protagonist are seven demon brothers each with a unique personality.
Based off the Japanese folktale "Momotaro", a girl named Momoko was born inside a giant peach. She was adopted by an old couple and grew up to be a voluptuous teen. Her three friends are animal Gods Inukami (dog), Sarukami (monkey), and Kijigami (pheasant); she has the ability to fuse with any of them to become a powerful magical girl. One day Momoko's village is attacked by the demon king's army who are searching for fragments of a treasure used to protect the land. After defeating the demons Momoko embarks on an journey with her animal friends to search for the "peach fragments" before they fall into the wrong hands.