I can not the name of this gods be damned manga! 5p1h3c

Frankly, it's worrisome. Memory, where art thou?

In any case I DO the plot... somewhat.

The manga is about two students in a high school who have personalities that differ from how they present themselves. The boy is the "prince" of the school, he acts humble? the main bit is that he is actually a narcissist ("Wow, I'm reaaaally great!"). The girl, who acts polite and reserved, actually hides a snarky sarcastic side of herself.
Both of these attributes manifest themselves as chibi characters that sit on their shoulder? The boy's is dressed like an actual fairytale prince, with a crown etc. I think the girl's is more imp-ish, with a devil tail and horns?

Anyway, they unintentionally reveal their true nature to each other, become friends, and then fall in love.

Feed your head.

Eensy-Weensy Monster?

Owner of Antisense Scanslation.

yes! thank you.

Feed your head.