(Akihabara Chou Doujinsai) [OrangeMaru (Ame)] Anten (Fate/Grand Order)

Sole female indicates that a gallery features exactly one female character throughout the entire work. This tag is important for readers who prefer focused, intimate scenarios rather than group dynamics or harems. It doesn't imply anything about the number of male partners — a sole female gallery can feature one male partner (sole male) or multiple. The tag helps distinguish between different relationship dynamics and is commonly paired with tags like 'sole male' for one-on-one scenarios or 'multiple male' for gangbang-type content. In terms of narrative structure, sole female works often develop a single relationship or encounter in depth rather than juggling multiple characters.

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.'

Netorare (寝取られ, NTR) is a genre tag where one partner is 'taken' by another person, typically involving infidelity or cuckolding. The term literally means 'to have one's partner stolen.' NTR is a complex genre with its own tropes: the emotional anguish of the betrayed partner, the seduction/taking of the unfaithful partner, and the voyeuristic element. The genre ranges from dark drama to fetish content. Related tags include 'cheating,' 'mind break,' and 'dark skin.' NTR is one of the most polarizing tags in doujinshi — readers either love it or actively avoid it.