Sudden Impulsive Indiscretion Syndrome

Toppatsusei Inkou Shoukougun is a collection of adult manga short stories and vignettes centered around themes of sudden impulses, romance, and sensual encounters. Spanning various scenarios and characters, the stories explore unpredictable moments of intimacy and desire in everyday settings. The collection includes diverse tales such as a weight-loss method involving public exposure in "Streaking Diet," sibling dynamics in "Present Sister," and encounters with friends' older relatives in "Tomoane." Originally published across various adult manga magazines and anthologies such as Bishoujo Kakumei KIWAME and Jun-ai Kajitsu between 2008 and 2009, the anthology showcases a range of romantic and erotic encounters culminating in the title story, "Accidental Sexual Act Syndrome."