Yes, another intriging chapter. And now for my comment!!
Blizzard said it all. For the Yuko/Kei moment. Lol. Ah...The good times.
Rika/Yossui moment. Wow. I expected Rika to get all shitty over Yossui being at Miki's house. I thought it was going to turn into a 'They must have slept together so Im not going to listen or ask for an explanation' moment but no, Rika did the thing I probably would have done if I were riddled with guilt - she went to get Yossui back.
I was sitting there wondering if Yossui was going to cast aside the bet and embrace Rika but no, that would mean an early end to the story. (If you were hoping for that, you just missed your window

).
I like Miki as this caring character. We hardly see that. You see her standing up for herself or her being a Yankee or a pervert or a love sick goof but not this Miki. Yes, I know I must sound like a fool going on and on about something so trivial but thats just the way I am. I guess I care so much about the characters persona because that is the thing that leads the story. 'Dont judge a book by it's cover. Judge it by the characters'.
Moving on.
The slap? Shizzam! Love some heated arguements.

That and I see Rika as a bit of a Hot/Cold Bitch (I blame Len for this way of thinking).
Moving on further.
Are you gonna make a cover? Hahaha...sorry...it was floating around in my mind and I wondered if you might...