Gunha tanks a railgun shot, launched with 30% of Misaka's power, straight to his teeth and then carries out a conversation with everyone. He is more hurt by someone calling him an idiot than by the Misaka's attack.
[35.6] “I’m not really interested in battling girls and kids, but I can’t refuse such a gutsy challenge. So be it. Missy, you can attack me all you want. If I can take it, I win, and if I can’t or if I fight back, I’ll admit that I’m not gutsy enough, and it will be my loss.”
[7] On hearing the hot-blooded guy who just set the rules on his own, Mikoto frowned and said,
[8] “Ahh... the more I think about it, I’m reminded of this manner of speech. The personality’s completely different, so why is that so? Oh, well, let’s just treat it as practice before I face that guy. I’ll force you to fight back. Get ready.”
[9] Flipping the arcade coin she had taken out from who knows where, Mikoto quickly accelerated the electric output in her entire body.
[10] “So since you’re using me as a stepping board to challenge on, ‘that guy’ seems like he’s a really gutsy person! Then I won’t run, I won’t hide! Bring it on!”
[11] Facing the guy in the white uniform who was still rattling on, BOOM!! The Railgun was shot out.
[12] “OOOOOOOOOONEEE-SAMA!? HAVE YOU LOST YOUR MIND!? THIS ESPER IS A SUSPECT, BUT YOU ACTUALLY USED SUCH A MOVE ON A HUMAN OF FLESH AND BLOOD SO SUDDENLY!? No, wait, I seem to hear that it’s okay if it’s against an opponent in a car, but even then, it’s a bit delicate for a Judgment officer.”
[13] Remembering that she had once used this attack to finish off a criminal, Kuroko hurriedly lectured her, but...
[14] “No worries, Kuroko. This person feels a lot sturdier than a tank.”
[15] “Eh?"
[36.1] Appearing in front of Kuroko’s eyes was the white uniform guy standing casually in the midst of the dust that had been blown up due to the impact.
[2] “Nah hah, hissy (Not bad, Missy)...”
[3] She thought that he mumbled because of the high impact,
[4] But Sogiita seemed like he was biting on something as he said that.
[5] Understanding that the object he was biting onto was the arcade game coin that the Electromaster girl shot out with a supersonic speed, Haratani and the Tokiwadai Judgment officer were both dumbstruck. The blond Judgment officer’s teeth were letting out a creaking sound.
[6] Sogiita spat the arcade game coin onto his hand, and stared at it unhurriedly.
[7] Then, after tilting his head slightly, he said with a serious expression,
[8] “Missy, I have something to say to you.”
[9] “Wh-What? You’re fighting back now?”
[10] Seeing the Electromaster girl who was breaking cold sweat and forcing a smile, Sogiita said,
[11]“Arcade game coins are not to be brought out.”
[12] “...”
[13] Everyone there was silent. At that moment, Sogiita seemed like he was worried for the girl who was his opponent, and said,
[14] “I feel that it’s better that you return this to the arcade before the shopkeeper gets angry. Well, I can go apologize with you if you want.”
[15] After a while, Haratani, who was hiding behind the vending machine, shouted at Sogiita,
[16] “I’VE THOUGHT THIS BEFORE, BUT I CAN’T STAND IT ANYMORE! I HAVE TO SAY IT: YOU’RE AN IDIOT!!!”
[17] “WHAT!?”
[18] On hearing the words that were a blow to him, Sogiita widened his eyes, seemingly in shock.
[37.1] “I see, so I’m an idiot.”
[2] After lowering his head dejectedly a bit, he quickly recovered and said loudly with guts,
[3] “But, well, SUCH TRIVIAL STUFF LIKE WHETHER I’M SMART OR DUMB IS UNNECESSARY! I DON’T HAVE TO MIND!!”
[4] “BE MINDFUL OF THAT A BIT!!!”
[5] Seeing the opponent who was having an exchange with the boy who seemed to be familiar with him, Mikoto frowned and asked,
[6] “You, you don’t seem like you negated all my power without a scratch, right?”
[7] “How is it possible!? It hurts like heck! But I just overcame it with guts!”
[8] “I see, so you’re a little different from that guy.”
[9] Facing Mikoto who was smiling fearlessly, the guy in the white uniform asked back,
[10] “Then, that move of yours was the arcade game coin cannon, right? It feels like you didn’t use your full power.”
[11] “That was just 30%. You, too, it seems like you haven’t used your full power, and I don’t really like that.
Toaru Jihanki no Fanfare, Page 35 through 37, Paragraph 6 through 11