one of the bullet train services running on the Tōkaido/Sanyō shinkansen / 光: a place name, such as that of Hikari City in Yamaguchi Prefecture / 光, 光璃, 光莉, 光梨: a female given name / 光: a surname

how

痴鈍: / 遅鈍: / 稚嫩: young and tender

痴鈍: / 遅鈍: / 稚嫩: youth and tenderness

地表: earth's surface

young grass

covet / indulge

to be greedy for something, to crave something / to covet something / (in compound verbs) to do something greedily or hungrily

proactive, positive, active, constructive

sly, cunning, sneaky