Harajuku, Shibuya, then an open evening

• 9:15 AM
  Leave. JR Sobu Line from Kameido straight to Yoyogi, about 35 minutes, $1.50 each by Suica, then a 10-minute walk into Harajuku.
• 10:00 AM
  Harajuku: Takeshita Street, then Cat Street for sneakers and streetwear (atmos, Kicks Lab). Nike Harajuku: grab a same-day Nike By You slot in the Nike App and put your own patches or embroidery on a tee, hoodie or cap, about 20 minutes. Patches $4 to $6 each plus the garment.
• 12:30 PM
  Lunch: Tonkatsu Maisen, Omotesando, in an old bathhouse. $9 to $19. No reservation.
• 2:00 PM
  Shibuya: Kith Tokyo, Miyashita Park North 1F and 2F (11 AM to 9 PM), with Kith Treats ice cream. Then the Scramble crossing, Nintendo Tokyo and Pokemon Center in Parco (6th floor), Don Quijote.
• 4:30 PM
  Open afternoon and evening. Pick one, nothing to book unless it says so.
  Shibuya arcades: GiGO or Taito Station by the Scramble, floors of crane games, rhythm games and retro cabinets. Walk in.
  Shinjuku: the free observatory at the Tokyo Government Building (open to 10 PM) and the Omoide Yokocho lanes. The "Dark Side of Tokyo" Shinjuku walking tour Joseph looked at starts here; check it takes a 19-year-old before booking.
  teamLab Borderless at Azabudai Hills: book a slot online first. Cesar: long lines, mixed.
  Warner Bros. Studio Tour Tokyo (Harry Potter) in Nerima: a dated ticket, about 4 hours, so it would be the whole evening.
• 7:30 PM
  Dinner: Uobei Shibuya, conveyor sushi you order on a screen. $10 to $19.
• Later
  20+ Joseph can stay out at Nonbei Yokocho or Golden Gai. Joey heads home on the Hanzomon Line to Kinshicho, then one JR stop to Kameido, about 40 minutes. Joseph later: Uber, $45 to $55. Uber to Kameido Station