Reborn: From the Start, a Demon Slayer with Yin-Yang Eyes

One of the most outstanding demon hunters of 2070, she somehow choked to death on a tiny beef tendon ball. After dying, her soul transmigrated into the body of a fat, nerdy man with the same name in 2021, and she also gained the Yin-Yang Eyes she had always dreamed of. From then on, she slays demons, wards off evil, fasts, cultivates her mind, and helps the original owner get revenge for past humiliations, all while gaining a horde of devoted fans. There's nothing wrong with falling in love, but could you not be so hung up on gender?