Tsutomu Takahashi
Tsutomu Takahashi, he's the example of "old but gold". Since 1999 until now, his collection has increased more than 25 series. He's well-known for his rough realistic drawing, which helps him express the mysterious atmosphere in his stories better. His topic usually about life, death, and choice, so if you're interested in those, Tsutomu Takahashi would be a great choice.