Jigoku Shoujo Mitsuganae EP15 - The Rabbit and Tortoise

Shinohara Usagi is a schoolgirl who is always being helped because she is too slow at everything. One day, her classmate Endo asks her to date him. However, Endo is forced to cheat on her by her jealous older brother Michito, and he leaves her, ashamed. Usagi reveals she has accessed the Hell Correspondence, intending to send her brother to hell. Shocked, he reveals that he has done the same. The two have a heartfelt talk about their sufferings. It is implied that Usagi is actually in love with her brother. They drop their straw dolls into the river. However, Usagi realizes Michito will never return her romantic affections so when he leaves, she retrieves the doll from the river and sends her brother to hell.