Particle no

Hi, from what i understand the particle no is used between 2 nouns to modify the noun at the back, but why are some adjective using no as well? Such as "Saikyo no otoko"

Help on this question would be greatly appreciated, thank you!

最強 is a noun.

最強　"saikyo" by itself is a noun, "the strongest." So in this case "no" is added to make that noun a descriptive word (an adjective), thus making the phrase mean "the strongest man."

Ohh, but isn't strong an adjective, and strongest a superlative adjective?

Yes but this is Japanese, not English.

In English "strong" is an adjective, of course, along with "stronger" and "strongest," but in Japanese 最強 by itself means "the strongest (something/someone)" and is a noun.

As to 最強, 最=the most 強=strong.

最強の男 the most strong man

最低の男
the most low level man

最 sai is used to express the extreme situation whether the adjective-element-noun is good matter or not.

Ohh I kinda get it now, sorry I am new to learning Japanese, so I am still sort of relating word meaning to English. Thank you very much for your help.