My daughter Mika came home with her boyfriend Hajime-kun. A well-mannered young man, he was warmly welcomed by my smiling self. Carrying delicious snacks and fragrant tea to my daughter's room... I noticed that they were busy doing something called "costume fitting" for their circle event. As I watched them with a smile, I couldn't help but be captivated by the unexpected sight of his impressively large member peeking out from the side of his costume!

娘のミカが彼氏のハジメ君を連れて帰宅してきた。礼儀正しい好青年を、母は笑顔で歓迎した。美味しいお菓子とお紅茶を娘の部屋へと運んだ母…すると何やら「サークルのイベントで使うコスチュームの衣装合わせ採寸作業」とやらを、娘と彼氏がやっていた。その様子を微笑ましく見守っていた母だが、彼氏のコスチュームの股間の脇からチラチラと見え隠れしてしまっている「想定外の巨根様」の勇姿に、思わず視線を奪われてしまい…！