A minimal long-only swing strategy on XRPUSDT perpetual futures using daily (1D) bars. Uses ONLY OHLCV data — no funding rates, no L/S ratios, no liquidations, no pairs — to keep verification fast and deterministic. The strategy buys XRP when it pulls back to the lower portion of its weekly (7-day) range AND the medium-term trend is still neutral-to-up. The hypothesis: XRP exhibits a strong weekly seasonality of 'sell into Friday/Saturday weakness, recover into mid-week' driven by a unique mix of Asia-Pacific retail flow concentration and weekend exchange illiquidity that other majors (BTC/ETH) do not display as cleanly. By only entering when XRP is in the bottom 30% of its 7-day range while still above its 30-day SMA, the strategy avoids both blow-off tops and outright downtrends. Exits are simple: a fixed 4% take-profit (well above the ~0.10% RT futures fee) OR a fixed 3% stop-loss OR a 7-bar time stop. Total free parameters: 5 (range_lookback=7, range_position=0.30, trend_sma=30, take_profit=0.04, stop_loss=0.03). XRP is chosen because (a) it has been a top-5 crypto by liquidity since 2017 with deep futures markets, (b) it is uncorrelated to ETH-ecosystem catalysts (no L1/L2/DeFi exposure), giving portfolio diversification, and (c) it has historically shown the cleanest weekly mean-reversion behavior of any large-cap.