"No problem!" He always had extra shirts tucked away somewhere - in his locker, in his bag, heck somewhere around the Rabbit Hatch, too. Ryusei would have an array of shirts to choose from.

Delaying Tomoko wouldn't also be a problem. If Ryusei was planning to pull his stunt on a Monday, then it'd be perfect. Tuesday was exams day and while JK normally didn't care about those, he'd been doing extremely poorly at Science of all subjects and he was going to need some help on that. "Take your time in preparing," JK said casually. "I'd delay her for an hour or two, if you want."