Sister Play

This is heaven...

Hmm...So she went from wanting to protect(?) her little sister from him (after 'indulging' on her body a little herself), to wanting his dick for herself, kind of?
Well that works out just fine I guess, he gets the both of them, Kotori got her wish and had sex with him, and Ryouko...Well, didn't get her original wish, but she seems pretty damn happy with the current arrangement.

The older sister pisses me off.

That Tummy on page 16! AHHHHHH SO GOOD!

Naughty sisters..

First page says "relative's daughter" but doesn't specify whether they're blood relatives or through marriage. Could be either incest or inseki
This is like.. a Schrodinger's incest

We really need more bisexual stuff.

The family that plays together, stays together.

The inseki tag doesn't apply here. There's no reference to them being step-siblings; it should be replaced with the incest tag.

Shougo-kun just barely managed to escape "Hassan Chop!" at the hands of somewhat-tsundere elder sister Ryouko, and was able to successfully unlock the threesome route with her and younger sister Kotori (NOTE: a threesome is not necessarily a harem).

IN-teresting bit there about Ryouko revealing herself to be "bi", or perhaps it was simply part of her original plan to keep Shougo away from Kotori. Guess it didn't work, and possibly her true feelings emerged as Kotori was about to go all the way.

Well, whatever ... it's all good and APPROVED!