Vergil had been remarkably silent for at least a minute, focused on checking the strength of his pulse and temperature of his forehead, whether his friend appreciated the gesture or not. Finally, he dropped a hand on Haruto's shoulder and gripped it tightly like he was half tempted to shake sense into him. (He was.) "You're running a fever and your pulse is weak, you /idiot/. You're /ill/. How could you not tell -- tell /someone/?" [you're fuckin grounded kiddo]
The half-demon’s sudden action disconcerted Haruto to a degree. He wasn’t used to others actively being concerned for his health, nor seeing if he was ill or not. So for Vergil to suddenly creep in at a relatively unexpected moment to check his pulse and his temperature…
Well, Haruto was a little confused at first, right up until Vergil started scolding him. (And gripping his shoulder—ow, he forgets how strong Vergil really is sometimes—)
"…Must’ve slipped past me."
The answer was poorly thrown out; an attempt to try and cover his tracks. Of course he’d known. How could he not? Wizards don’t generally get sick due to their enhanced fortitude (a rather mundane boon from what he sometimes considered the greatest of curses). Getting poisoned by Manticore—even as surprise strike to his heart—would’ve taken a full day to kill him. And he was actively fighting against it the whole time. So to find himself suffering the symptoms of—well, something—was an unexpected surprise.
"That so?"
Vergil wasn’t buying it. Heck, Haruto was pretty sure the guy wasn’t even gonna consider the notion. The guy was like a human lie detector who could pick up on the tiniest details in how you talk, picking apart what you say and looking to find the truth behind your words. And right now, he could clearly tell Haruto was lying through his sickly, weak teeth.
"Whatever the case, you’re still ill. Were I in your shoes, I wouldn’t do the foolish thing and try to push myself. Lie down and rest for a few days.”
There was a sort of… ‘concerned bite’ to his words? Oxymoron aside, Haruto could tell Vergil was genuinely concerned for him. And while Haruto would’ve normally actually done the foolish thing and tried to move on like normal, he didn’t like worrying others. Especially Vergil.
"…Alright. I’ll take a day or two."
Hand still firmly gripping Haruto’s shoulder, Vergil would stare into the wizard’s eyes for a few moments. Finally, he would close his eyes and loose a sigh.
"Smart choice."
Later, Vergil would make certain to lock all of the windows inside Haruto’s apartment. And would firmly stand outside the apartment door, the Yamato resting in folded arms.