1
LINE-first stack: chirashi + coupon + digital point card as a LINE Mini App, with optional native shell
受注インパクトRemoves install friction (top abandonment cause); leverages the user's existing LINE login → registration CVR jumps because no email/password step. Push via LINE messages keeps the chain top-of-mind on a phone Japanese shoppers already check daily.
開発工数Medium — LINE Mini App scaffold + LIFF SDK + a Next.js backend; fits inside ¥49,800/month if reusing the chain's chirashi PDF pipeline.
2
One-tap checkout barcode that opens before the splash/popup
受注インパクトDirect fix for the #1 user complaint (3-tap coupon barcode at register). Reduces perceived checkout time, increases re-open frequency, and keeps cashier queues moving — which store managers feel daily.
開発工数Low — a deep-link 'Open to barcode' shortcut + iOS/Android home-screen widget; no new backend.
3
Net-super slot picker that locks inventory for the booked window
受注インパクトSolves the 'same-day stockout' rage that drives 1-star reviews on every Japanese net-super; Ocado proved a clean slot UI alone lifts bookings ~6%. For a regional grocer this is the difference between net-super being a P&L drag or a growth lever.
開発工数High — needs WMS/inventory integration. Position as the optional Phase-2 module after the LINE chirashi/coupon Phase-1 ships.
