My Little Brother Is a Sickly Sweetheart

It has an artsy title: Meteor Crash.

A very, very short story, slightly scary.

This younger brother's personality is probably like this: obedient as a puppy in front of his sister, but ruthless as a wolf when she's away. A little yandere, too. He switches seamlessly between the two, and his double standards are famous!

Come on, let's have some pseudo-incest!

Theme: Reunited after a long separation