[Ruutyan] Otaku-kun "Gyaru ha kusasou na hodo eroi"

Sole male indicates a gallery features exactly one male character. Combined with 'sole female,' this creates the classic one-on-one pairing. With multiple female characters, it creates a harem scenario. This tag is useful for filtering based on the reader's preferred dynamic — whether they want focused monogamy-style content or one male with multiple partners. The tag doesn't specify the male character's role or prominence; he could be the protagonist, a side character, or even a reluctant participant depending on the genre.

Dark skin (黒人, kokujin / 日焼け, hiyake) refers to characters with darker skin tones. This includes naturally dark-skinned characters, tanned characters (tanlines), and characters with dark skin as an artistic choice. The tag covers various ethnicities and skin tones. It's often paired with tags like 'tanlines,' 'big breasts,' and 'big ass.'

FFM threesome indicates a three-person sexual scenario involving two female characters and one male character. This is distinct from MMF (two males, one female) and MMM (three males). The tag helps readers filter for specific group dynamics. It frequently appears alongside 'big breasts,' 'sole male,' and 'yuri.'