I recommend to you...Soul Cartel.
Well now, here's a recomendation for those who like action shonen stories, but don't like black and white pages:
Soul CartelSoul Cartel is shonen korean webtoon (manhwa) that revolves around Si-hun Cha, a 14-year-old boy who desires to become the best medium ever. To achieve this he trains him self everyday under the guidance of his older sister Su-In (Nuna ), hunting souls to send them to the Underworld. However, one day while chasing one of the said souls he ends up meeting a devil called Mephistopheles...which basically makes Si-hun his new source of entertainment. The following events of the plot will be closely tied to Mephisto's historical battle agains Faust, and will be full of surprises!
The narration is very smooth, one can easily follow the premises but at the same time be incredibly intrigued and excited by the next chapter. The art is simply very well done, and I really like the colors (somewhat bright but well balanced!). The sense of humor is very nice, sometimes quite hilarious. And the action is awesome...so yeah, don't miss Soul Cartel!
Some images for ya!