There is a manga I just remebered
It's about a young man, he's thief with the traditional spiky black hair
He also has a companion, a crow which he shoots lazers out of his mouth.
He has necklace which the pendant is diamon and it looks like there's a woman in it and when he holds it he refers to his mom a lot
And in a scene in a casino where he won a lot of gold a girl kissed but the crow said She'll suck out your soul.
And when the girl asked him his occupation he said theif and she started shooting at him
[m]
[a]

It's Jing: King of Bandits

Quote from Lezard

It's Jing: King of Bandits

You're right that's it! THANK YOU THANK YOU! THANK YOU!

SO much!