Uesaka Sumire (上坂すみれ) revealed more details for new single Koisuru Zukei (cubic futurismo) (恋する図形 (cubic futurismo)). Her 7th single has tie-up as ending theme for anime This Art Club Has a Problem! (Kono Bijutsu-bu niwa Mondai ga Aru!). Plus she voices lead character Colette...