TLDR: It's an entertaining anime, not too ambitious but it does its job. The fights are solid. As for the main characters, Sakamoto and Shin, I didn’t find their personalities all that interesting to be honest. On the other hand, there are other characters I did like such as Heisuke and Lu who are quite charismatic. My only issue with this anime is how it romanticizes assassins, trying to portray some as "good" (the protagonist's group) and others as "bad". I obviously try to put that aside to enjoy the show, but it's hard for me. For those who can overlook that, I hope you enjoythe show.