 If you liked Monster |  ...then you might like Odd Taxi |
I can't compare the masterpiece called Monster with any other anime but I have to say that odd taxi did a great job. It's really recommendable how an anime with only 13 episodes developed really well their characters and the plot twists that has been used it perfectly, Also with a good OST and animation. It's probably the hidden gem of 2021 and it's the best original anime I've seen in a long time ago.
Its the same thrilling experience, and u will be on the edge of your seat...and the climax will surely get u just like monster. I will not say that it is as dark as monster but it has its own style of delivering the story....this anime is worth the watch and it will entertain u and will not waste your time.
report Recommended by levibigass