Silent Möbius Klein  

Silent Mobius Klein - side 0, Mobius Klein: Silent Möbius SIDE ZERO, サイレントメビウス・クライン 完全版00

The prequel manga to kia asamiya's silent mobius is called mobius klein. it focuses on how fuyuka and gigelf first met, while also introducing several important characters from the later series, such as rally cheyenne and ganossa maximillian. additionally, it includes the ancestors of other characters like yamigumo razan.