The reference may or may not be taepodong but if you look at both the manga raws and the webnovel, it is 奥義アイ・アム・アトミック.
The name of the skill is "I am atomic".
It would indeed be appropriate second end to "shadow"chuuni . His crew would even blow his legend out of proportion post mortem.
But yea, "Hiken Tsundere Gaeshi: Zan Riajuu Ken" is known for being non-lethal technique.
Always fun to see LN readers complaining but they always come back haha.
I still don't get how the MC still believes everything is BS and coincidence while killing people who speaks about those events.... ohh well, is a comedy so I guess it's fine.
"Hey you know the time you got imprisoned under no evidence for kidnapping the princess, the time we tortured you like an animal and then tried to forge evidence against you?
Yea, be happy that you are forgiven, I hope you are grateful!"
People argue about adding honourifics is whatever but when it is literally "I am atomic" in kanji and people still complain... You just can't please everyone i guess.