Fan Casting Rikka / りっか in Characters by Name but I'm Excruciatingly Thorough

From Japanese 梨 (ri) meaning "pear", 律 (ri) meaning "rhythm, law, regulation, gauge, control", 立 (ri) meaning "stand up, rise, set up, erect" or 六 (ri) meaning "six" combined with 香 (ka) meaning "fragrance", 夏 (ka) meaning "summer" or 花 (ka) or 華 (ka) both meaning "flower". Other kanji combinations are possible. Rikka (立花, 立夏, 六花) as a word in Japanese (立花), a style of ikebana, a Japanese art of flower arrangement, (立夏) meaning "first day of summer, beginning of summer" and (六花) meaning "snow".