I'm not releasing these in canon order until I get a good story going. My scanner didn't rape the quality this time, but I'll go through the panels anyway.

1 Rexus: Hey, Zaraki... Zaraki: Yeah?
2 Rexus: You ever think of having kids with Reva?
3 Zaraki: Not really... Why?
4 Rexus: Oh, just a thought...

The box says: NO POKE 5 Extra Strength Condoms
The Kanji/Katakana in the 4th panel say, from left to right: Fling, Heh heh heh...

And a FREE COMMISSION to the first user to guess where I got the pose in panel 4 from. You have to name title AND volume to get the commission.

Zaraki ©  thehalfbreed
Rexus and Serenity © me