Series with mermaids, merman or sirens
Series with characters that have medical knowledge
Series of characters who are knights, sword master or mercenaries
Series with characters that are incubus or succubus
Series with characters who work as a host
Series where the main character is at high school
Series with characters that are forces to hide their gender for reason or hides gender to go out a lot
https://hero.page/lostteen/heterochromia
Series with character who wear glasses
These series have males turning into females or females turning into males by either getting isekai or being cursed
Series of characters playing games
Series set in a guideverse setting
Series with character that are elves
Series where characters are either dom or sub where the sub has to listen to the dom's
Series with characters that are detectives or police officers
Series where character has a disability. Some series the character might later be healed
Series where characters are demon/devils
Series with delinquent/yankee characters