I am a genius so I don't need a strong cheat to survive

The Human Kingdom of Talkia is at war against the Demon Federation Lorran. In an attempt to gain the upper hand, Talkia decided to use the hero summoning ritual, a magic ceremony that summons soldiers from another world bestowed with the blessing of the god Wion.

This time, seven heroes answered the call.

\"Hello, I am Eun-Ha, Sung Eun-Ha, the incredible genius who got many engineering degrees and a PhD in physics at the young age of twenty-one. Ah? You are wondering why I am surrounded by a creepy group wearing some robes while I am dressed in some over exposing magical girl outfit? Haha, well... I was kidnapped by my friend to a comic convention and then she was surrounded by some ominous light so I just pushed her away and voilà! I am now an amazing hero who is going to kill monsters. Yay!\"

\"Does that kidnapper that calls himself the king really believes that I would obey him?! Let\'s just put the sweetest smile that I can muster to fool him and then let\'s escape from this place. I don\'t care if he says that he knows the way to return to Earth, I am not stupid enought to believe some kidnapper, I am going to find my own way home, I don\'t care if my cheat is weak compared to the other heroes, as a genius there is no problem that I can\'t solve!\"

This story follows the adventures and desventures of Sung Eun-Ha, a genius that has a tendency to do idiotic things without thinking.