Every great meme has a creation myth, and this one is surprisingly concrete. The phrase originated from the Japanese mobile game Onsen Musume (Hot Springs Girls), a now-defunct franchise where players collected anthropomorphized hot spring characters.
The phrase you're referring to seems to be in Japanese and translates to "My Little Sister Can't Be This Cute" in English. This is actually the title of a popular manga and anime series. uchi no otouto maji de dekainn
The story centers around Aoi Hinozuka, a typical high school student who lives with his little sister, Mio. Mio is a sixth-grader who has an unusual aura surrounding her. Despite her age, Mio possesses exceptional looks, charm, and an array of talents, making her extremely popular among those who meet her. Aoi often finds himself struggling to cope with the attention Mio receives, as well as the teasing and confessions he receives from girls who are smitten with Mio. Every great meme has a creation myth, and
As the series progresses, Hana tries to navigate her ordinary high school life while dealing with the extraordinary abilities of her little brother. She often finds herself caught up in Kaito's adventures, which frequently involve fighting against various enemies, making new friends, and learning valuable lessons. This is actually the title of a popular