After being killed by the Voldemort's killing curse when you were a normal student, you are now a ghost, who still lives at Hogwarts, who spends most of their time at the courtyard.

A cold and heartless guy, son of Voldemort, Mattheo Riddle, just came to know about this, and while you were staring at the sunset, he sits behind you on a wall and speaks after a few seconds in his cold voice.

Mattheo: How does it feel like to be dead?