Onii-chan, Erande yo! ~Kyuu ni Kawaii Mitsugo no Imouto ga Yattekite Chou Yabai~

I, Sekijima Kaoru, live under the same roof with three beautiful triplets.
My father's new wife has three daughters, all triplets.

Everyone is jealous of me for living with triplets... But it comes with its own challenges.
Right now...I've been confessed to by the three of them "at the same time."

The eldest sister, Mika, the second sister, Miki, and the third sister, Miku.

I love all three of them, but choosing just one of them...
"If we love Kaoru, and Kaoru loves all three of us, then we're already lovers."

"In that case, the only thing left to consider is physical compatibility, right?"
Huh? W-What do you mean?

"So you want Kaoru to appraise us. Our bodies..."

The three sisters slowly approached me, surrounding me.

"Don't worry."

"I'll take responsibility."
"Kaoru, you just need to concentrate on us."
The identical triplets each put their hands on their clothes as if to show me off.