Kaito didn't know why, but he could feel himself growing irritated with that random (albeit pretty) girl as she clutched Conan to her chest. He twitched, crossing his arms over his own chest. Conan was sending him a helpless look, but he could only stand with an icy expression.
What is wrong with me? he wondered, glaring down at his shoes as his arms tightened at the small sounds of protestation Conan was giving. Am I... jealous? Of Conan? Or... could it be...?
The thought was (thankfully) left unfinished as the girl pulled back, beaming. Glancing over at professor, she asked, "Who is he, Professor?"
Kaito raised an eyebrow, noticing the apparent fatality of this particular question as both Conan and the professor stiffened. Just another clue to support my theory that Conan isn't who he says he is, he decided inwardly.
After a long, fairly suspicious pause filled with Conan staring violently at him, the professor finally explained, "A-Ah, he's my... a distant relative. He's... been staying with me."
The girl frowned, pouting. "Well, Shinichi didn't tell me that such an adorable child was staying with you! That mystery freak!" Kaito, gaze sliding down to Conan, was surprised to see the small smile evident on the six-year-old's face, one traced with fondness and a dab of sadness.
Kaito's chest seemed to constrict. He let out a small cough to release the feeling, only succeeding in increasing the feeling and drawing the professor's, the girl's, and Conan's attention to him. There was an awkward silence for a few seconds.
"Oh, I forgot about you. So who are you?" the girl asked.
Sorry for the skipped day! Here's another filler-ish chapter.