At 4, Groo is undoubtedly the youngest S-ranked awakened in the country. But as her kindergarten class's (self-proclaimed) ace, she can take a challenge! So when her first quest window tells her to find a grown-up who'll take her in, she marches down to the top guild in Korea and demands to be recruited. Sensing that this overpowered orphan shouldn't fall into the wrong hands, the guildmaster has no choice but to adopt her. But he has no idea this tiny girl is about to turn his life upside down!

A female author of lewd mangas frequently finds herself without motivation to work. In those cases she calls over her married neighbour, Nanako-san.

"Ruzena Rezek, you're fired!" "Everyone was just being considerate of you. You're a witch who can't use magic, and you can't even compound medicine!" When the head of the apothecary workshop suddenly fires her, Ruzena not only loses her job but the place she was living, too! Then, by coincidence, she meets a noble named Eric, who wastes no time asking for her services. "Ruzena, your knowledge of herbs is amazing! I've established the Royal Research Institute. Won't you come work for me?" Having never been complimented before, Ruzena can't believe her ears. She agrees on the spot, but working…

A female author of lewd mangas frequently finds herself without motivation to work. In those cases she calls over her married neighbour, Nanako-san.

A compilation of chapters originally included in the Shin Koihime Musou Gaishi Saiten anthology series with some new content.