This is one in a series of doujinshi set in an alternate universe where Duo adopts a Neko-Heero to live with him, Trowa's a genie under Quatre's control, and Wufei is the landlord. I think. MISADVENTURES ENSUE
It's very cute tho, if a bit odd.

Cover
Back

Nice shot of Duo and Heero
Neko-Heero from behind.
With a label!
AWW!
Neko-Relena
Neko-Relena bein groomed by two familiar people.

Heh, Neko-Heero reprograms the clock...
Neko-Heero is hungry.
But not for that.
Neko-Heero wants THIS!
Ah, the price we have to pay...

Duo runs inta Quatre
Kisses Heero's paw...
And as usual Quatre has his entourage
Who is that guy?
Or rather, who WAS...
Duo is QUITE ALARMED...
Then, something explodes for no reason!
A cute shot of Heero from behind
Quatre: Look, I have a lamp!
Look who's IN the lamp.
Genie-Clown Trowa!
Much to Duo's alarm, Genie-Clown Trowa is immaterial.
A little pill...
FULL SIZE BISHOUNEN NEKOS!
Duo's not quite happy with this.
Quatre: Well, that was rather rude, don't you think?
Trowa: Tea?

Neko-Relena and Dorothy
Dorothy looks happy about somethin
What have we here...?
Duo to the rescue!
Commiserating about their odd pets
Neko-Relena's so prissy
::staaaaaaaaare::
RUN FOR IT HEERO!

So, Treize is a vet now...
Duo: Yeah, I need this thing off my head!
Treize: Looks like we'll have to OPERATE!
Woah, Lady Une.
And in the end, everything's okay

Wufei: I demand JUSTICE!
Heero: How about KICK IN THE FACE

Where's my Neko-Heero!?
Oyasumiiii...

Looks like Heero's got somethin...doesn't Trowa need that?