Zi-O is weak? I used the power of Oma to kill people like crazy

Jiang Che travels to a parallel world invaded by monsters.
Everyone in this world will get to choose one of three armor inheritances when they turn eighteen.
On the day when the school organized the inheritance, Jiang Che was lucky enough to be drawn.
[1. Magic King - Shura Armor]
【2.Heisei Life Picking King·Kūga】
【3. Watchband Knight Zi-O】
Faced with these three options, school leaders and countless people were excited!
You know, the strength of armor is equivalent to a country's strategic weapons!
However, what was unexpected was that Jiang Che chose Watch Knight Zi-O without hesitation.
"It's over. This kid is stupid. Why did he choose a piece of armor?"
"That's right, isn't it good to choose the armors of Shura and Kuga?"
"I remember someone chose Zi-O before, but he was very weak."
Jiang Che felt the power of Oma in his body. He believed that the future Oma Zi-O would be known throughout the world!