A new mechanic known as Xross Brave Burst is introduced, which requires two or more units with mutual relationships to execute stronger attacks.

Also, the game features an improved summoner avatar system that can be levelled up through branch evolution and equipped with various weapons and items.

Alongside the improved summoner avatar system is the ability to raise pets as companions in quests, which, like units, can be evolved to become stronger.

300, a strange group called Negress makes their move, destroying countless kingdoms and worlds for their unknown ambitions.

The main character and his childhood friend, Rin, were protecting the treasure trove underground with the help of Augus and Lory when they were caught by the black knight.

However, the black knight commanded Shaia to attack the hero and Rin, distorting the portal as both of them were sucked away into it and were separated as they traversed into different worlds.

Unlike the music in Brave Frontier, which is synthesized, Brave Frontier 2 will feature a real orchestral soundtrack done by the Tokyo City Philharmonic Orchestra and composed by Hikoshi Hashimoto, Kenji Ito, Minako Seki, Kaoru Wada, Noriyuki Iwadare, Tamayo, and Tadayoshi Makino.

[7] Takahashi also expresses his deep thanks regarding the success of the first game saying "In the future even after the new series has been released, the BF that is being enjoyed now, will continue to allow for both existing and new players to play it.

[9] In the 2017 BraveFest in Osaka in August 2017, the official staff revealed more redone artwork of older units and revamping for the original game's Arena system, as well as streaming of the first Prologue Motion Comic.

[12] In an interview with Famitsu regarding the game's development, Takahashi stated that "Brave Frontier is a titled type, so you can do a sequel in the form of version up, and of course it was an idea.