[Pietoro] Tomodachi No Mama Ga Ero Tteki Masu

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.

Mosaic censorship (モザイク) refers to the pixelation or blurring applied to explicit content in Japanese published works. This is due to Japanese obscenity laws that require censorship of genitalia in published materials. The tag helps readers identify whether content is censored or uncensored. Many doujinshi are published with mosaic censorship and later 'decensored' by fans or released in uncensored versions by the artist. Related tags include 'uncensored' and 'full censorship.'

MILF (Mother I'd Like to Fuck) is a character type tag referring to mature female characters, typically mothers or maternal figures. In doujinshi, this tag indicates content featuring older women, often contrasted with younger male partners. The appeal lies in the experience and confidence of the character. The tag frequently appears alongside 'big breasts,' 'incest,' and 'sole male.'