Get wild and wet at Tokyo Summerland, which has 18 water slides, a wave pool, and even an onsen. Experience the Den Den Dodonpa, one of the world's fastest roller coasters, at Fuji-Q Highland to give yourselves some adrenaline rush.
Visit Akihabara, a popular district for manga, anime, and gaming. Head to Mandarake, the largest anime and manga fan store in Tokyo. Round it up with some arcade gaming at Taito Station Akihabara, which opens 24/7.
Tour the Nikka Whiskey Distillery Miyagikyo and Nikka Whiskey Sendai Factory. Continue the day with some drinks at Bar Ben Fiddich, where you can try out some of their unique cocktails. Ending the night at Manekineko Karaoke, where you can belt out your heart's desire.
Dine with a different flair at Maidreamin, a popular maid cafe. Head to Robot Restaurant to see the flashy and energetic automated performances that feature robots, lasers, and cute dancers. End your night at Bar Albatross, a cozy jazz bar that opens until 3:00 AM.
Visit the sacred Asakusa Shrine and Senso-ji, the oldest temple in Tokyo. Grab some delicious ramen dishes at Rokurinsha Tokyo Sky Tree Solamachi, located in Tokyo Skytree Town. Wrap it up with a birds-eye view of Tokyo from the Tokyo Skytree Tower.
If you have extra time, you can visit the Shinjuku district for some nightlife and karaoke. Alternatively, you can visit the Tsukiji Fish Market for some fresh seafood and sushi. If you have less time, you can skip the whiskey distilleries and go straight to karaoke and jazz bar. You can also allocate half a day to revisit your favorite places or to have a proper rest before heading to your next destination.