Last week, a select group of Silicon Valley entrepreneurs traveled to Tokyo to learn about Japan’s tech sector and new opportunities. What they found was a country in transition, a few surprises, and a group of Japanese entrepreneurs itching to plunge headfirst into the international marketplace. The goal was to “build bridges — geographical, cultural, and topical” between Silicon Valley and Japan, said Ellen Levy, VP of corporate development and strategy at LinkedIn and founder of Silicon Valley Connect, the organizing body for the trip.