In an Anime Crossover: I Have Doraemon and Shin-chan

In this crossover of anime worlds, there are no all-powerful techniques, only the rule that one thing always counters another.

The myriad worlds are under attack. As Nohara Shinnosuke's uncle and Nobi Nobita's teacher, isn't it only natural for me to defend a world or two?

You say you're the strongest Jujutsu Sorcerer? Then I'll just pull out a galaxy-destroying bomb. Wouldn't that blow you up?

You say you're the Shadow Lord, the strongest and most low-key person in history? Sorry, but the moment I put on this stone hat, even you won't notice me.

And here's one more thing: the goddess of luck is on my side.

(A fusion of multiple worlds, featuring Doraemon, Crayon Shin-chan, Jujutsu Kaisen, The Eminence in Shadow, and all kinds of other anime. The story is incredibly exciting.)