01 1. Direct Stature Differential: ゆうちゃみ (古川優奈) Alongside Comparison Benchmarks
Within this curated comparison group, listed heights range from 芦田愛菜 (Mana Ashida) at 145 cm (4'9.1") to ゆうちゃみ (古川優奈) at 175 cm (5'8.9"), an overall spread of 30.0 cm (11.8 inches). ゆうちゃみ (古川優奈)'s reference value is 175 cm (5'8.9"). The shared baseline makes these numerical gaps easier to compare without estimating them from a photograph.