Nozomi to Shinagawa, Keikyu to Haneda, home
Light morning, then the Shinkansen. Shinagawa is the trick: Keikyu runs from the same building into Haneda Terminal 3 in 15 minutes without a change.
Transit: Shin-Osaka → Shinagawa Nozomi, ~2h25, ¥14,720 pp reserved (peak-season +¥200). Book on SmartEX from 28 Feb 10:00 JST, five seats in one rear row with the oversized-baggage area. Shinagawa → HND T3 on Keikyu, 13–20 min, ¥410. Door to door 3h20–3h40.
- Morning
- Tsutenkaku at its 10:00 opening or a last Kuromon breakfast, then Shin-Osaka with the bags. Shinsekai & Tsutenkaku TowerDeparture option A — Shin-Osaka → Shinagawa Nozomi
- Afternoon
- Ekiben on the train. Fuji on the right-hand side after Shin-Fuji if the sky is clear.
- Evening
- Haneda. Tax-free receipts and remaining yen sorted before security.
Rain / alternative: Morning flight from HND: cut Osaka to three nights and sleep at Shinagawa on the 29th. The 06:00 Nozomi only serves a flight from about 11:00.