Honkai Impact 3rd and Honkai Academy 2 are related, but they are also different. Let me briefly introduce them below.

The story backgrounds of Honkai Impact 3rd and Honkai Impact Academy 2 are the same.

The theme of Honkai Academy 2 is "Honkai", telling a story surrounding "Senba Academy" being "Hengkai", and in-depth exploration of the origin of "Honkai"; Honkai Impact 3rd continues the previous game Honkai Impact

Some settings of the academy have a complete and unique world view, but the plot has made great progress and continues the main plot of "Honkai Academy 2", telling the story of Kiana and others escaping from Thousand Feather Academy.

In the process, I met Wuliangta Jizi and started a new adventure story.

In the adventure of saving the world, the life experiences of Kiana, Raiden Mei, and Bronya will also be gradually revealed.

Honkai Impact 3rd and Honkai Impact Academy 2 are two games with completely different gameplay.

Honkai Impact 3rd is a 3D action ACG mobile game produced by Shanghai MiHoYo Network Technology Co., Ltd.

Honkai Academy 2 is a 2D side-scrolling shooting game produced and published by miHoYo.