CloverWorks

CloverWorks (株式会社CloverWorks) is a Japanese animation studio that was rebranded from A-1 Pictures’ Kouenji Studio. It is a subsidiary of Sony Music Entertainment Japan’s anime production firm Aniplex.

On April 1, 2018, A-1 Pictures rebranded its Kouenji Studio as CloverWorks, which has a unique brand identity, distinguishable from its main Asagaya Studio. The studio is based in Suginami, Tokyo. On October 1, 2018, CloverWorks announced that it had separated from A-1 Pictures, although it remained as a subsidiary of Aniplex.
*wikipedia

Chidori High School and the neighboring Kikyou are two completely different worlds. The former is a public high school for boys, often boisterous delinquents from poorer families, while the latter is an elite academy for girls from wealthy homes, famous for its pristine image and strict rules. For years, a fierce rivalry combined with deep-seated resentment has persisted between the two schools.
Gojou Wakana has been fascinated by the art of creating hina — traditional Japanese dolls — since he was a child. He inherited this passion from his grandfather, who taught him the craft. Unfortunately, it required total dedication, which is why he had no friends by the time he started high school. There are several girls in his class, and the beautiful Kitagawa Marin, around whom everyone else gathers, seems to lead the group. Wakana treated such people like visitors from another planet—at least until fate crossed their paths. One day, the sewing machine at his home broke down due to its age.