Sumire Ichigaya

Sumire is an 18-year-old girl who is trying to make ends meet, by working a stint as an alien exterminator at Saotome Busters just to pay her bills. She usually clocks in late at her job, which angers her boss. She typically works her job on a call basis: customers suffering from space vermin infestations call Saotome Busters, then she and coworker Hirasaka are dispatched on a car (with Hiarasaka driving) to the affected locations to exterminate the space vermin.