Prolly heard this one before, but I'm looking for something like that but with above 50 chapters preferably? I've read kizumi kun already. Thanks!

Hmmm.... I don't really have much selection. How about Onani Master Kurosawa ?
Angel Densetsu although the guy is popular in an opposite way. Lol
BTW, what is kizumi kun? I try searching for it but I couldn't find it.

It is not a manga and it doesn't have more than 50 chapters, but I think it has what you're looking for: Sweet x Trouble

It has good comedy and is a completed series too

Be careful of your thoughts, for they will become words.

Be careful of your words, for they will become actions.

Be careful of your actions, for they will become habits.

Be careful of your habits, for they will become character.

Be careful of your character, for it will become your destiny.

How about Hibi Chouchou

“Hey, Mom. Why did you give birth to me?” – Ray