[aino tatsurou] Tensei shitanode mesu Monster o okasu (Ongoing)

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.

Blowjob (フェラチオ, fellatio) is one of the most common sexual act tags in doujinshi. It covers oral sex performed on male characters. The artistic depiction varies from realistic to stylized, with many artists developing signature techniques for depicting the act. Common visual elements include drool, tongue detail, eye contact, and depth indicators. The tag appears across virtually all genres and is frequently paired with tags like 'ahegao,' 'big breasts,' and 'sole female.'

Muscle (筋肉, kinniku) refers to characters with muscular physiques. This tag covers both male and female characters with visible muscle definition. In doujinshi, this ranges from subtle athletic builds to heavily muscled bodybuilder types. The tag has grown in popularity alongside the 'gijinka' and fitness trends in fan art.