Tear/Chronology

Demon Lord Attack Arc
Tear was first seen and introduced as working under Demon Lord Kleiman to investigate Demon Lord Frey and discovered that she was worried about Charybdis's resurrection.

She shows up again soon together with Footman to convince Phobio to control Charybdis and use its power to get back at Milim.

The Octagram Soars Brightly Arc
She was listening to Laplace's story about infiltrating the Western Holy Church.

She showed up in the war against Kleiman's forces and fought against Phobio and later Geld with the help of Footman.

Saint-Monster Confrontation Arc
When Laplace tells her and the other clowns about Kleiman's death she doesn't want to believe it and accuses Laplace of lying. Later she agrees that the best they can do for now is lay low.

Majin Behind The Scenes Arc
She gets the job of delivering failed otherworlder summons to Leon Cromwell along with Laplace and Footman.