Kanonmi

Nakayama Haruto is a game commentator who streams provocative content under the name "Oni-chan." He attracts attention for his radical streams , but his true identity is that of a good older brother who streams to raise money for his younger sister's tuition and living expenses. However, he accidentally forgets to turn off the streams, and his true personality is revealed to the public. Just when it seems like he's going to cause a major uproar, the contrast with his usual self turns out to be a big hit with viewers...!?

The three sisters, once clingy and needy as children, have now grown into beautiful young women—and for some reason, they've developed a strong possessive streak!