[Been] 私と叔父さんの秘密

Nakadashi (中出し) literally means 'internal ejaculation' and refers to creampie scenes in doujinshi. It's one of the most common sexual act tags, appearing in over 120k galleries. The tag covers vaginal internal ejaculation specifically. In narrative terms, nakadashi often serves as a climactic moment and may be tied to plot elements like pregnancy, impregnation, or relationship escalation. Artists frequently emphasize the visual aspect with detailed internal views (often using x-ray techniques). Related tags include 'impregnation,' 'creampie,' and 'internal cum shot.'

Stockings (ストッキング) is a highly popular fetish tag focusing on thigh-high stockings, pantyhose, and similar legwear. This tag has a dedicated following due to the aesthetic appeal of stockings in illustration — artists often use them to accentuate leg lines, create contrast with skin, and add visual texture. The tag covers various styles including thigh-highs, garter stockings, pantyhose, and knee-highs. It appears across all genres and is often paired with 'sole female,' 'big breasts,' and 'schoolgirl uniform.' Some artists are known specifically for their detailed stocking artwork.

X-ray (X線) is a visual technique tag where the artwork shows internal anatomy during sexual acts. This allows viewers to see internal ejaculation, penetration details, and other anatomical elements that wouldn't be visible in a normal perspective. The technique is unique to illustrated content and is a significant artistic choice. It frequently appears alongside 'nakadashi' and 'impregnation.'