Remorse
Disclaimer: I don't own Code Lyoko or anything related to it (If I would, few things would be different…)
Kadic Academy, Sunday morning, 7 am. Very few people were up at this hour. Jeremy Belpois was one of them and he had his reasons. For example, putting his friends in constant danger, playing Frankenstein with their health, concerns about his nature of being overprotective and so on. Or at least that's what he thought considering the torment he put his friends through when he found the supercomputer and the virus within. But if he would've chosen not to start it, the gang wouldn't be in its current form. However, his friends had a different view of him. Sure, he is protective and does get annoyed easily, but he really cares about them and shows it through his actions (since they speak louder than words…). Because of that, they really loved spending time with him and they could easily forgive him should they end up in an argument.
Over the years they had their up and downs. Moments of triumph when they managed to counter X.A.N.A.'s attacks and at the time the most important achievement: bringing Aelita to Earth. Jeremy couldn't suppress his smirk when he recalled the events during her first night with him as he took her all around town. It didn't take long for things to turn for the worse. X.A.N.A. managed to get out of the supercomputer, destroy Lyoko and take William prisoner and use him as a weapon. Jeremy frowned when he thought about how things could've been had he listened to his friends. But when they finally managed to destroy X.A.N.A., it didn't feel like a victory. Mainly because it came with a loss of Franz Hopper. To everyone else, he was able to keep himself together but when he was sure he was at a safe distance, his walls started to crumble.
Six months later he had to fight his inner demons once again. X.A.N.A. was back. When he finally thought he could start making amends, his intelligence was needed against the rogue A.I and later Tyron. Jeremy was having enough. He was once again leading his friends towards a new set of dangers when they had gotten used to their normal lives. To their fortune, X.A.N.A. was much weaker, and William was brought back to the fight. However, there were now three geniuses at Kadic. The new girl, Laura Gauthier, was another brilliant mind capable of almost anything she set her mind to. Bringing her into the team was a questionable decision. She managed to keep herself in the group but after bringing her father into the lab and sending William alone in the Cortex, her luck ran out and she was kicked out. Finally, Jeremy's train of thought stopped at Aelita's birthday. That day was one of his worst. He fell to a trap set by X.A.N.A., Skid was destroyed, holomap and superscanner were disabled. That was topped by him disrupting the Overwing's program, causing Yumi to almost fall into Digital Sea. That was the straw that broke the camel's back. Jeremy decided he had enough and left the computer lab. In the end, he put himself together and made a comeback to save the day. X.A.N.A. gained strength, but Jeremy was back in business.
Or so his friends thought at least…