The Spoiled Young Wife of the 80s, Making the Rough and Tough Man Nervous

"Genjutsu: Sharingan" Itachi whispered as his eyes peered straight into Caribou's and after around twenty seconds his eyes rolled into his head and he passed out, Itachi stood up and sighed before turning and looking towards Luffy.

Everything is good but the MCs. Basically their interaction is meant to be funny but it isn't at all. It's was funny at the start but until when are we supposed to find their bratty dispute funny, One is god knows how old he is and the other is more than 30 years old, and they can't get over their first misunderstanding, They keep arguing and fighting with each other like some snotty toddlers.

I am new to writing novels so please wrtite reviews to point out my mistakes or things iIneed to improve on