Well, there could be various such manga. Maybe it's a dark and gritty one with a stealthy assassin.
I think it might be a manga that focuses on the assassin's complex backstory and their adventures. The black hair and round glasses might be part of their signature style to stand out in the story.
If you want the clearest chapter reference, go to Chapter 53. Early on, Night had fallen over Chixia Village, eerily void of any human sounds.; later, the chapter leans on Jiang Li followed the village chief's wife down a narrow path leading to....
If you want the clearest chapter reference, go to Chapter 39. Early on, Qi Tianyu had been looking forward to watching Jiang Li's drama unfold.; later, the chapter leans on But to his surprise, Wen Jiaojiao, who seemed to possess some strength,....
The best chapter pointer here is Chapter 81, ""Chicken Fleeing and Crabs Escaping" cp". It opens with Qi Tianyu, who chose curry beef rice, received a piece of curry and a... and closes on The summer on the Southwest Plateau is no joke; the sun at three o'clock....
The best chapter pointer here is Chapter 102, "The production team can't take a joke!". It opens with When the camera cut back, the three of them had already returned to the... and closes on The cameraman, with a blank expression, turned off the camera, causing....
The best chapter pointer here is Chapter 67, "You Can Still Pick Mushrooms?!". It opens with I'm pissed," Jiang Yan cursed again, "These people are too much, aren't... and closes on Accompanied by the wisps of smoke gradually rising from the stove behind....
The best chapter pointer here is Chapter 52, "Your Child is in Danger Now". It opens with The village chief and the woman behind him exchanged a glance, "This... and closes on And at this point, they might as well try a desperate remedy for a....
Look to Chapter 49 for the clearest answer. It begins with My phone!!!" Jiang Yan's roar echoed continuously through the mountains in..., keeps building through Watching helplessly as his latest-model phone was taken away by a..., and lands on Thinking this, Jiang Yan marched forward, pulled Jiang.
The best chapter pointer here is Chapter 72, "Jiang Li Resembles an Early Capitalist". It opens with Jiang Yan was still griping when suddenly a fair hand reached out beside... and closes on Think about it." Jiang Yan fell silent..
If you want the clearest chapter reference, go to Chapter 51. Early on, Oh, okay." After uttering two syllables indifferently, Jiang Li bent down...; later, the chapter leans on By the time she reacted, Jiang Li had already disappeared at the end of....
Look to Chapter 102 for the clearest answer. It begins with When the camera cut back, the three of them had already returned to the..., keeps building through The mud on Jiang Yan's body had dried mostly from the wind, and he walked..., and lands on The cameraman, with a blank expression, turned.