Isekaid 40ish Man Returns, Regressed as a Peerless 17-Year-Old

「Fumu….this time the door seems to be a person who’s quite faithful to his desire.」

What used to be Kakogawa stood out stoutly with his arms crossed over his two meter plus body.

His muscular arms and legs were ripped from the inside and out.
He looks like a savior that appears at the end of the century.

Well, it’s currently the end of the century, right?

「Door? Are you saying that you appeared using a human as a catalyst?」

「Hnnn? A lowly man? You don’t seem to know anything.
If you fight with me long enough, I can tell you as a souvenir from Valhalla.」

The smirk on his face is filled with confidence.

「That sounds to be quite a nice service.」

「To say a line like that, did you even think you can do something about this Thor-sama!」

The man who called himself Thor stamped his right foot with a bang.

Then, a thunderbolt emerged from his foot and—-

—-boom!

The entire dojo was blown away.

When the smoke that’s covering our vision cleared, the area was little with the walls from the dojo which had become burnt wood.

-0-

There was not even a trace that this was a dojo made of reinforced material.

It looked like it was bombed.

However, it was not a bomb that did it but a lightning bolt.

The impact is also significant so if I had been late in setting up a barrier, Yui would have been electrocuted.

「Hou…..you managed to withstand Mjölnir unscathed.」

The only ones standing in the rubble are me, Yui, and Thor.

「Cough….what was that….what an incredible power and he didn’t even need to charge to attack like that….」

Yui coughed and took half a step back.

She’s someone who already faced valkyries.

Did she feel his strength?

That’s good.
Being able to know the power of the opponent is remarkable.

「Yui, given that explosion, will people from your mansion go straight here immediately?」

「I usually practice with considerable noise but that explosion earlier is too much.
I haven’t told anyone from my house about Kazu being here so….」

Nothing good will come from Yui’s family finding out about me.

They might support me financially but I don’t think they will ever consider me as an ally.

In short, I should hide my ability from them in order to assure Yui’s safety.

「How much time will it take them to get here?」

「This place is at least 2 kilometers away from the mansion so….I think it won’t take five minutes.」

That means I can’t stall for too long.

「Norse mythology god Thor, right? We’re running out of time so let’s get it on.」

「How rude.
But I don’t really care.
I will teach you one lesson for each blow you can withstand.」

If I don’t get out of here quickly, Yui’s effort of making dummy images on the surveillance cameras will have been in vain.

Nevertheless, Thor is a famous god in Norse mythology and he’s someone with the strongest weapon.

That’s game knowledge.

I’m sure I can extract a fair amount of knowledge from this guy.

I won’t have chances like this every day.

Thus, I’ll maximize it to the last second.