Why Modules Shouldn't Live Together

The Situation

Kagerou: Okay...So what's the situation look like?

Ame: Let's see. The Light Rins have claimed the right side of the mansion. That includes the kitchen, dining room, and lower study. The Dark Rins have claimed the entire left side, including the living room, recording room, and stairwell.

Ougetsu: All bathrooms are neutral ground, however, you must ask permission to use from each bathroom's Guard Rin.

Kuro: Guard Rin?!

Kagerou: All of you act like you're preparing for a real war...Are you really so serious?

Ame: *ignores her and continues* All Rin rooms are designated by the Rins that are in residence. For example, R and Panda's room would be claimed by the Light Rins.

Kuro: Am I the only one who thinks this all sounds ridiculous?

Kochou: Laugh all you want, but the fact is, this is indeed a power struggle.

Kagerou: What if there's an uhhh...Neutral Rin in a room?

Ame: Then the room would be designated by the other Rin in residence.

Ougetsu: Unless, of course, said Rin was also neutral.

Kagerou: This is making my head hurt... I'm not sure battle strategy is for me...

Kuro: Er...what about the basement?

Kochou: Neither side has claimed it.

Ame: They appear to think it's haunted.

Kuro: Why would they think that?

Kagerou: Well, it's dark...and old...and creepy...

Kuro: And even the Dark Rins won't go there?

Kagerou: It must be something really scary, then...

Ougetsu: Well, neutral ground is neutral ground. We can hide out there until this ends.

*The Rins head for the basement. Kochou slowly opens the door.*

Kochou: *motions them in*

*The five Rins head downstairs, Ougetsu in the lead*

*They suddenly get the feeling they're being watched*

Kuro: Sure is dark in here...

*A pair of shiny eyes show up in the dark*

???: HISSSSSSS!!!!

Rins: AUGH!!!!

*The Rins run back upstairs*

Ame: A conflict of this scope and scale... is much safer than whatever's down there.

Kagerou: Agreed.

???: Another escape plan...foiled. Rats.

(Guess which Module was hiding in the Rins' basement?)