Tập 50: Eroze, Android của Đường Hầm Không Âm, Nhắm Vào 999

50

A woman named Eroze who controls the tunnels that don't absorb any sound tries to destroy the 999. In order to save the 999 from destruction, Tetsuro goes with the woman. We then find out she's actually an android who was built for schadenfreude. Tetsuro becomes enraged that she'd pull off so many horrible pranks including destroying the 999. Then at long last... (Source: Crunchyroll)