Ao no Kanata no Four Rhythm EXTRA2 is/was announced on July 7, 2016, the story follows the events after Aokana: Four Rhythms Across the Blue, but now, it would be focused over the character, Misaki Tobisawa.
The Opening Music (one of a kind 1chorus ver.) got released over Comiket 92, and a full version was eventually released as a bonus for purchases exceeding 5000 JPY over the spriteSTORE between February 01, 2019, and March 2019.
On June 26, 2018, sprite announced that they’re halting their operations by March and the development of Ao no Kanata no Four Rhythm EXTRA2 has been indefinitely halted.
After sprite resuming its operations with S-WORKS on November 28, 2019, over their blog post, they said that “In the future, we would like to produce Ao no Kanata Four Rhythm EXTRA2, but we are considering ways to realize it given the current situation.”
On January 24, 2020, sprite started a questionnaire about Ao no Kanata no Four Rhythm EXTRA2 that would last until February 9
A day after the end of the questionnaire, on February 10, 2020, sprite thanked everyone who responded to the questionnaire and said that “Based on the results of the questionnaire, the final decision will be made and will be announced on the official website in March.”
On June 16, 2020, sprite announced that the production of the game has resumed.
- EARTH DEFENSE FORCE: WORLD BROTHERS – Additional Character: Riho Futaba, Original Blue Swimsuit
- EARTH DEFENSE FORCE: WORLD BROTHERS – Additional Mission Pack: Another ResCUBE
- EARTH DEFENSE FORCE: WORLD BROTHERS – Aya, the Calm Big Sister Swordswoman from “OneeChanbara”
- EARTH DEFENSE FORCE: WORLD BROTHERS – Colonist: “We’ll Help, If It Means Saving the Planet”!?
- EARTH DEFENSE FORCE: WORLD BROTHERS – Cosmonaut: “We’ll Take the Planet As Is”!
- EARTH DEFENSE FORCE: WORLD BROTHERS – Fencer (EDF5), Grim Reaper Colors & Special Gear
- EARTH DEFENSE FORCE: WORLD BROTHERS – Hostess ILI from Dream Club, Giving the EDF a Try!?
- EARTH DEFENSE FORCE: WORLD BROTHERS – Hostess Mian from Dream Club, Giving the EDF a Try!?
- EARTH DEFENSE FORCE: WORLD BROTHERS – Hostess Setsu from Dream Club, Giving the EDF a Try!?
- EARTH DEFENSE FORCE: WORLD BROTHERS – Infantry (EDF3), Storm 1 Colors & Special Gear
- EARTH DEFENSE FORCE: WORLD BROTHERS – Prowl Rider (EDF: IR), KR Prototype & Special Gear
- EARTH DEFENSE FORCE: WORLD BROTHERS – Ranger (EDF4), Omega Team Colors & Special Gear
- EARTH DEFENSE FORCE: WORLD BROTHERS – Ranger (EDF5), Sergeant Colors & Special Gear
- EARTH DEFENSE FORCE: WORLD BROTHERS – Saki, the Crazed Little Sister Swordswoman from “OneeChanbara”
- EARTH DEFENSE FORCE: WORLD BROTHERS – The Legendary Mr. Y, Reborn as “Mecha Yuki” After His Acid Incident!?