Konosuba: God's Blessing on This Wonderful World! season 3 episode 8
Episode title: An Eternal Rest for the Master of This Lake!
Kazuma and the gang fail to defeat the hydra in the lake near Axel. The gang hopes to rely on knights from the capital, but they've been delayed due to a bandit disturbance for which a bounty has been issued. Darkness, however, is obsessed with the hydra.
