Getsuyoubi no Soratobu Orange.

A group of unusual characters inhabit a vibrant and eccentric setting. Yoshino is energetic and always moving. Tsuka-pon appears to be an orange-themed educator. Natou is a dog. Another character, referred to as "Senpai," is often asleep or absent-minded. Manaka enjoys animals and has prominent eyebrows. Nanami, also called Nacchan, regularly bikes to school. The world includes watermelons, orange-like alien teachers, and a dog named after a type of fermented bean. The story presents a cheerful and offbeat environment for this animated group.