Kel is a big fan of Friendship, of course he will insist. Even if he doesn't know Nagito well enough, yet, to work on that. And, somehow, he managd to miss most of the most blatant thigns going on (and does't know about Mari's... incident), so this is just blind confidence.

"Super Mega Extra Hyper Awesome high School Level Friendship Expert." He's going extra if hehas to "I could talk for hours about all the many friends I have. When you're a 'Solo' Child-" oh, yes, he's using videogame terminoogy, it's Bad as it seems. "-in a very boring household, you better find out people outside who will play with you. Basketball, Soccer, tennis, name a sport and I got it. And I even befriend people who aren't into sports!" He is sounding way more confident than he actually is.

"We will work on your friendship skills, promise. And-" Is he going to tease back? You bet. "You and mister Hope? Just wait, I will make sure you two turn into friends sooner or later. It's a threat."