This version of Esper Dream 2 - Aratanaru Tatakai is a fan translation patch, likely created by the group 'Aeon Genesis,' making it playable in English. The original Japanese-only release was modified by this fan group to translate text and menus, thereby offering access to English-speaking audiences.  The core gameplay and story remain the same as the original Japanese version. While the quality of the translation might vary, it shows the dedication of fan communities to make obscure games accessible to a wider player base.  Nintendo was not involved in the creation of this translated version.

Esper Dream 2 - Aratanaru Tatakai (Japan) [En by Aeon Genesis v1.0]

Esper Dream (Japan) (Rev 1) (Disk Writer)