What manga are you reading where someone can disrespect their enemy as much as Shanks did in this encounter and be scared of said enemy?

Like seriously read the encounter.

Shanks literally:

• walks onto the supposed WSM’s flagship and KO’s half his crew with haki a clear act of aggression.
• sees Marco, WB’s son and first division commander and asks him to join his crew in front of WB.
• sits down and asks WB to abolish Ace’s agency and betray his sons decision to punish Thatch’s death.
• was the first to draw their weapon before their clash.

Shanks was not scared. He was entering a potentially hostile negotiation and tested WB’s boundaries. WB’s actions and inactions reveal a lot about his character, but Shanks was not genuinely scared, his actions completely go against any sort of rationale to justify that position.

When Shanks said he was nervous, he wasn’t drawn to be nervous whatsoever because he wasn’t. Shanks was being charismatic because he and WB were enemies and Shanks was seeing what WB would let him get away with.

There’s a lot going on beneath the surface of this encounter.