The anime illustrates how the three protocols/standards handle a request (an online video purchase) from the user by handing off packets of data between them.

Second season of Love Live! Nijigasaki Gakuen School Idol Doukoukai.

Fourth season of Yatogame-chan Kansatsu Nikki.

Disillusioned with the afterlife, a new student causes a scene during a classroom test and expresses his doubts about whether getting good grades can really lead to escaping the school and ascending to Heaven. Afterwards, he is confronted by the new student council president—a familiar face whose past experiences give him powerful insight into the true nature of the school and first-hand knowledge regarding the futility of rebellion. [Written by MAL Rewrite]