Matsuda came very close to mentioning that he and the rest of the Kira task force had pretty much played by those exact rules (although the bets were usually over who paid lunch and where they ate) but realized that it probably wouldn't be the best idea to tell Soichiro that they'd been goofing off so much. "I can agree to those terms," he smiled, but then he was okay with anything Rika suggested because, again: Pretty girl.