“We have to be careful. Someone was inside the laboratory,” Rain said. On her face, the expression of being alert and at the same time, frightened, was plastered. “Who was the person inside the laboratory, come again?” Timmy asked, confused. “The mastermind of everything. The principal of Josen High School, Principal Copper.” “Wow, I never knew that the principal has something like this in a secluded place.” “It is a good place to hide a laboratory, you know. It is restricted to us, and the place was toot frightening for someone who has a weak heart, Seven said. “So that means we’re strong-hearted?” “We have the courage, Timmy. But I don’t think we could consider ourselves as strong-hearted. You see, if we’re strong-hearted, then we would be able to stroll in this plac

