Fight Ippatsu! Juuden-Chan!! 1x9

Plug and Alesta get called to Chief Pulse's office where they are introduced to the Rouden-chan (leakage girls), Reka Galvini and Kuran Shunt, who monitor electrical leakage, and are accused of smuggling electricity. The Rouden-chan also reveal they are aware of Sento and accompany Plug and Alesta on their next run.