The Seventh Brave
The Six Braves have gathered, but the phantasmal barrier has been activated. With only one means of deactivating the barrier, the Braves must figure out which of them is the fake Brave. Meanwhile, Flamie reveals a surprising secret.
Aired 02/08/2015EP 5 - The Seventh Brave

2015
Rokka -Braves of the Six Flowers-
When the Majin awoke from the depths of darkness, the deity of fate chose six heroes and bequeathed them with the power to save the world. Adlet, a boy who proclaims himself the strongest on Earth, was selected among the Rokka no Yuusha (Heroes of the Six Flowers), and he goes to the rendezvous point — but seven have gathered there. The heroes suspect that someone among the seven is the enemy, and the initial suspicion falls on Adlet.
(Source: Anime News Network)