Oh, and why Keine? I wasn't aware of any particular affiliation there. And yes, the Rumia darkness thing is a "ZUN picking at his characters" in-joke, much like ⑨ is.
In Japan, children say "いけないんだ、いけないんだ 先生にいってやろう" when they saw bad behavior of their friend. So this "先生" does not mean particular character. This serif is intended to show infantility of Mystia.
kow said: I love the thought of Rumia not being able to see out of her own darkness xD
You're in luck. It's canon. I forgot whether it was stated in her interview with Aya (Bohemian Archive in Japanese Red) or in her article in Perfect Memento in Strict Sense, but it's there.
It's in Perfect Memento. In Bohemian Archive, she actually lets some light in during the "interview" portion, but not enough for Aya to write by, and immediately after this comes up, she mentions she still bumps into trees.
Rumia has a triple bump on her head. Good job getting hit three times in one place, Rumia.
You won't get away with messing with our friend!You won't!Mister?Waah!You'll pay for...Okay... I guess...Bye bye!Thank you!Is that being ignored?Bossave me! Refers to a scene from Sexy Commando: You're Amazing, Masaru-san!!Bonk BonkBonk BonkIs that an enemy?
Alludes to Rumia's habitual "Is that so?"Is that getting owned~Excuse me, are you all right?*stare*I've had enough!Bring it on!Is something wrong?Is that your doing!?Explanations are futile!Stop right there!Eh? What is it?Eeek!Crying won't help you now!Noo! Not bugs!So gross!Eh? Gross!?You, which side are you on!?You should apologize!Well?Stop it. Stop it!Didn't we forget something?Ah!SayYes?Bye bye!*sob*It's "Miss"!I'm telling the teacher!*sob**uwaaaan*Eh? You're mistaken.That hurt, you know!But! I just said crying wouldn't help her...