Asia first met Issei shortly after he was reincarnated into a Devil, viewing Issei as a kindhearted person. After Raynare extracted Asia's Sacred Gear out of her body, Asia in her final moments as a human thanked Issei for being her first friend, devastating Issei until Rias reincarnates Asia into a Devil. Asia has strong feelings towards Issei and wishes to stay together with him forever. Whenever Issei thinks of anything perverted or behaves in a lecherous manner towards another girl, she would often get teary-eyed and pull his cheeks. Though she realizes that Issei is in love with Rias, she doesn't give up on her desire to be with him.