weight 0.6 is best.

outfit1
rikka1, 1girl, takarada rikka, black hair, solo, blue eyes, wrist scrunchie, long hair, red socks, school uniform, black skirt, bangs, pleated skirt, orange scrunchie, red bow, white cardigan, long sleeves, bowtie, white shirt, miniskirt, white sweater

outfit2 (A sample image of a swimsuit can be found on Pixiv.)
rikka2, 1girl, takarada rikka, black hair, blue eyes, solo, layered bikini, ponytail, side-tie bikini bottom, black bikini, orange scrunchie, navel, breasts, long hair, mismatched bikini, animal print, medium breasts, bangs