Animeleague

What was the name of the anime where they were fighting a super strong villain and the villain was about to finish one of the mc's friends or members and the mc(I'm not sure if it's the mc) was trying to run as fast as he could to stop the villain but he was too slow and while on slow motion he was thinking about how he wasn't fast enough to save the "friend" but then all of a sudden he got so fast the villain

router address

You've just described every single shonen anime out there

Think we need a bit more detail about the characters, any names you remember for them?
Or any specific characteristics on the main character or the villain?
Any idea if it it's an old or recently aired anime?

If you can remember even just 1 name, we might be able to narrow it down for you.