もえばな (Series) favorite_border

High-schooler Tsukumo Fukakusa is obsessed with an anime about human characters based on flowers. He secretly enjoys looking at the flower arrangements displayed in front of the back entrance of his school. Then, one day, his knowledge of flowers is noticed by the ikebana club, who suddenly recruit him! This otaku, guided by his favorite idol character, enters the world of flower arranging! Thus begins this ikebana youth drama!

(Source: Manga Plus)