Ultra Sister

I want to protect my sister from jerks so I flirt with every boyfriend she brings home in order to see if he would cheat on her. Once one guy passes my test I seduce him for real cause he passed the test and thus must be a good catch...

I want to fakku publish tankoubon from utu with uncensorship..

Ah, you passed my "loyalty to my sister" test to protect her! Let's fuck!

Waiting for the threesome.

Dammit, now to wait for the sequel...

When utu's tank drops, so will my wallet! (｡†¢Ì€á´—-)✧

I was right, the pigtails is a sign of eroticism

As far as the question at the end, my reply would simply be" does a bear walk in the woods!?!?!"

Well, normally you would suspect that she is just testing you, right? I guess many have fallen for the trap where they think she really is coming onto them...
I feel that by actually having sex with him there was no real meaning to 'testing' him, unless of course she just planned to actually take the one that passes the test because he's a decent person?