Langrisser X Overlord

Langrisser X Overlord is an ongoing special collaboration crossover event hosted in Langrisser. ot began in December 17, 2020.

Story
A great darkness was summoned...

In order to protect this world, it is a man confronts an unprecedented strong enemy--!!??

Bozel is always used by the Imperial Legion Apostles. In order to restore the dignity of the "Army of Darkness", he plans to use Angelica's "Door of Space-Time" to summon a powerful demon. However it was "Ainz Ooal GOwn" that was summoned.

The strongest Demon King of the popular anime "Overlord"! The armies and Imperial Legion Apostles fall in front of him and his loyal aides, Albedo and Shalltear. Will the continent of El Saria be conquered by this Ainz? The battle for the role of "villain" is about to begin!

Trivia

 * A trailer of the game was released on July, 23, 2020.
 * This is the longest ongoing collaboration Overlord.
 * Popular characters from Overlord, Albedo and Shalltear are available. At the start of the game, players had a limited-time chance of summoning SSR heroes Albedo and Shalltear.