Although the incident in the coffee shop was unsettling, for Yu Chen and Hiromi Jounouchi, it was merely an episode.
Would you kill a mouse, destroy its nest, exterminate the whole family, and even demolish the house it was in, just because a mouse scurrying by affected your mood?
Yu Chen felt he couldn't do such a thing. Seeing a mouse might disturb him, but the way to improve his mood wasn't to kill the mouse, but rather to quickly shift his thoughts and forget about the mouse altogether.
"Mr. Chen Yu, what exactly happened that you had to rush back to Japan so urgently? Is there something that Ryosen-kun and the others can't handle themselves, something so critical that you had to go back?" Hiromi Jounouchi inquired, her tone unable to hide some resentment towards Ryosen and the others.