Description: Joey Lewbert was a big fan of Mazinger Z, and out of a sudden he gets transported to an alternate world while gaining a mecha known as Mazinger ZERO. The world he got in is none other than the Union-Verse. Once he got in the picture and easily defeated a group of villains, he became the target of Union Academy's ambitions. However he made friends with Azur Lane, Teyvat and Chaldea, who warn Joey of Union's true colors. He swore to help people against Villains and Fake Heroes.

Main Character:

Joey Lewbert/Mazinger ZERO

Allies:

Eagle Union

Royal Navy

Iron Blood

Sakura Empire

EMIYA/Archer

Venti

Zhongli

Diluc

Harem:

Enterprise

Belfast

Bismarck

Akagi

Kaga

Illustrious

Massachusetts

Prince of Wales

Taihou

Roon

Richelieu

Jean Bart

Vittorio Veneto

St. Louis

North Carolina

Washington

Prinz Eugen

Amagi

Tirplitz

Monarch

Junyou

Atago

Dido

Friederich Der Grosse

Formidable

New Jersey

Sovetskaya Rossiya

Kronshtadt

Duke of York

Lutzov

Alabama

Hornet

Ulrich

Lumine

Ei/Raiden Shogun

Yelan

Yae Miko

Amber

Beidou

Artoria Pendragon/Lancer

Scathach

Enemies:

Union Academy

League of Darkness

Abyss Order

Sirens

Einst Alchimie/Persönlichkeit (main antagonist/yandere)