Day 1
Land in Tokyo, settle in Asakusa
Morning
Land at Haneda or Narita. Pick up a Suica IC card at the airport (¥500 deposit, refundable) and load ¥3,000 — you'll use it for every train, bus, vending machine, and convenience store for the rest of the trip. Ride the Keisei Skyliner (Narita, 41 min) or the Keikyu line (Haneda, 30 min) to your hotel. Don't try to sightsee. Drop bags, shower, eat ramen.
Afternoon
Walk to Sensō-ji via Nakamise-dōri. Skip the main gate selfie line — go around the side and shoot the five-storied pagoda from the east. Browse the Kappabashi kitchen-supply street one block north for ¥800 ceramic chopstick rests that are nicer than anything you'll see in Ginza. Buy a small umbrella; your hotel's umbrella stand will save you later.
Evening
Dinner at Naritaya Asakusa for halal-friendly ramen, or Ichiran in Shibuya if you'd rather do the cubicle ramen experience on Day 1 while you're jet-lagged enough not to mind the queue. Be in bed by 21:00 — Day 2 starts early.
TipMost Tokyo hotel check-ins are 15:00. If you land early, leave bags at the hotel front desk (they'll always hold them) and walk straight to Asakusa.