Eridan doesn't need to see Murdoc. He's not a fifth year, and his grades are pretty good in DADA. He doesn't even have any sort of personal emergency he should bring to his father, but the fact of the matter is...he's more then a little bored. Notes and homework can only offer so much entertainment, he's read all of the books he has in the castle, and Murdoc's office is the closest thing.

So that's where he is, raising an eyebrow at his father as he flops down into a chair across from his desk. "Are you really sure leavin' your door open is the smartest thing? What if someone decides to draw on your face when you fall asleep." Because, really, Eridan is sure that's inevitable.