Half-day trip to see Mt. Fuji from Shinagawa? That's easy. From Shinagawa Station, take the Tokaido Shinkansen to Nagoya. Get seats on the right side of the train, and hope for good weather. Arrive in Nagoya 90 minutes later. Lunch at Nagoya station, then take the Tokaido Shinkansen to Shinagawa. Get seats on the left side of the train, and hope for good weather. Total trip time with lunch: four hours.