I like your work. But remember to balance your rest. It is important to keep the promises made, but we have to be healthy to do so. I wish you success.

I don't know what the army is like in your country, but in mine they would take care of everything and if the MC were to say something, he would get a slap in the face and be arrested with the excuse of being a threat to national stability.

plot twist the MC will be sealed and a 3rd Satoru appears, who is also sealed. then a 4th Satoru appears and when he arrives, the Satoru from the 4 directions enter into resonance and breaks the sealing.

If the MC from the future has already done the same thing as the MC from the past, then the MC from the future let himself be sealed on purpose so that the MC from the past can go to the future to do something that only two of him at the same time could do?

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In the original work, Sarutobi manages to prevent the third box from being summoned, taking into account Minato's abilities, I think that perhaps Orochimaru wouldn't even have the chance to do the Edo Tensei technique, at the very least there would have been one more coffin prevented from being summoned.

Orochimaru may be a little crazy, but he's not stupid. I don't believe he would initiate this attack while sitting next to Sarutobi and Minato. Nothing he showed in the work could deal with Minato with the 3rd Hokage. At most escape, but there is no point in launching an attack on this scale just to escape. I think the story had to have invented a random reason to say that at that moment Minato cannot be present or with limited power.