It's not really much of a concern.

A twinge of nervousness when his laptop isn't around; an automatic jolt of fear when his phone buzzes and he sees Aelita's contact on his screen.

Sometimes, in class, he drums his fingers on the desk and stares out the window, worrying about needed adjustments he hadn't had time to make that morning. His progress on the anti-virus- fleeting ideas that he's positive will work and that he's terrified of forgetting.

Lately, though, it's fearful glances over his shoulder and uncomfortable eye contact with strangers. Tension and flinching at contact, being spooked at approaches from the rear.

She knows who the target of the past few attacks has been. She remembers seeing lightning crackle across his skin until his eyes lose focus, watching him get slammed into the wall, hearing his frantic voice over the phone- again, and again, and again.

Or when that specter had assimilated into his place after trying to drown him in the Seine. When that had failed, the clone simply shoved him down the elevator shaft and did so again. When that hadn't worked...

Well, according to him, it had been a good thing Ulrich had showed up.

After losing a bet and getting locked into completing a certain wild-haired hero's homework, Yumi's not sure why she finds herself pausing at his door as she heads towards Odd and Ulrich's room on that Saturday morning. Before she knows it, she's knocking on it.

There's no answer, unsurprisingly. She knows how engrossed Jeremie can get into his work.

Twisting the doorknob, she peeks into the young genius' room. "He-" She cuts herself off abruptly at what she sees before her.

He's at his desk, in his pajamas. His head's down on the keyboard with his arms curled around himself, and the rise and fall of his back is smooth and rhythmic.

On one hand, she doesn't want to disturb him. It's so rare for him to settle down and actually get some sleep. But on the other...

Well, that didn't look very comfortable, and he'd be in a sour mood for the rest of the day if he woke up with a kink in his neck.

With a sigh, Yumi approaches him and sets a hand on his shoulder. "Jeremie?"

His blue eyes snap open instantly, and he jerks up so violently she fears he's given himself whiplash for a moment.

After fixing his glasses and catching his breath, the blond-haired boy exclaims, "Jeez, Yumi! You scared the crap out of me!"

She draws back to give him some space, putting her hands up. "Sorry, sorry. Just figured you didn't wanna miss breakfast."

"It's fine." He takes off his glasses, wipes them off with his shirt, and then rubs his eyes wearily. "Just wasn't expecting that." With that, he turns in his swivel chair back towards the line of coding before him, hands moving towards the keyboard and beginning to tap away.

She watches him for a moment; her dark eyes flick back and forth from the screen to him.

"...Everything alright?"

"Fine." His response is curt. Then, he pauses as he seems to realize something. "Wait- it's Saturday, isn't it? What're you doing here?"

"Lost a bet."

"Odd?"

"Yep."

Despite his rather moody response to her earlier entrance, he can't help but chuckle. "Not surprised. You should really know better by now than to make bets with him."

With that, his brief smile fades, and he returns to whatever program he was so fixated on this time.

Yumi decides to cut right to the point. "Look. I've noticed you've been acting... kinda off lately." She doesn't mention the others' quiet concern. "I just wanted to make sure everything was cool before heading off."

"Never better," he mutters, squinting at a certain line and then using the arrow keys to backtrack and correct an apparent error. After he does that, he pauses. There's a note of hesitation in his voice this time when he speaks. "...It's just been so crazy lately, you know what I mean?"

Yumi nods. She knows what it's like to be the target over and over again- but at the same time, she knows his experience is different.

He's always left alone to face whatever XANA decides to throw at the world while his friends go off and fight on Lyoko. That, and the constant pressure of absolutely needing to be at the computer while the warriors do battle...

It was quite a weight to bear.

"Yeah, I get what you mean." She lingers on a thought for a moment, but after some consideration, she comes to a decision. "You know... If you want, I could teach you a bit of pencak silat. Just some small stuff- you know, for self-defense."

When Jeremie smiles, this time, it reaches his eyes. He meets her gaze. "Well, I'm terrible at anything athletic, so I doubt it'd do much..." She wants to protest- she remembers what Ulrich and Odd told her about that time he saved Aelita at the pool. "But I really appreciate the offer."

The objection dies on her tongue, and she returns his smile. "The simple stuff's really not too bad. Consider it, huh?"

Her phone buzzes, and she glances at it with a huff as she sees Odd's name. "Looks like I gotta go. You should meet us downstairs for breakfast in a bit."

Jeremie nods, his attention back on the computer. "I will. See ya."

With a final goodbye, she heads out the door.

Later on, as she watches with a combination of disgust and awe as Odd somehow manages to devour two entire plates of pancakes and eggs, Jeremie texts her with a hesitant inquiry about meeting up in the gym later that evening. Her response is immediate and affirmative.

It's the least she can do, after all.