Mari(マリ) is a character in Cider Words Bubbling Up Like Cider (サイダーのように言葉が湧き上がる Cider no Yō ni Kotoba ga Wakiagaru Kotoba), being is Smile and Juri's younger sister. Loving gadgets, she is the most tech savvy among the three siblings. Smile, wanting to grow as a star in the streaming world also from a producers point of view has asked Mari to do exactly that for her. 
Mari wears a pink and purple polka dots dress that falls right above the knees. She wears her blonde hair in two pom poms, one on each side, and wears a cat hair clip.
Cheerful as Mari can be, she can also be a prankster to her older sister Smile.
Smile is her sister.
Juri is one of her sisters, they share a big room and often go to the mall with Smile.