Sata Andagi!

‣ Ayumu Kasuga (Japanese: 春日歩 Kasuga Ayumu), better known as "Osaka" (大阪), is a transfer student from the city of Osaka and one of the main characters in the Azumanga Daioh series.

‣ "Sata Andagi!" refers to a scene from episode 21 of the anime series Azumanga Daioh where Ayumu "Osaka" Kasuga excitedly and repeatedly says "sata andagi" while holding sata andagi. Sata andagi is a type of deep-fried bun similar to a doughnut. The episode originally aired in 2002 and became the subject of edits and memes as an exploitable throughout the 2000s.

‣ The psychology of Ayumu "Osaka" Kasuga