Although I was quite hesitant to start it, But I'm really glad I did as the story is pretty decent, also liked the whole Murakami arc (which is also animated in Anime). As it is an Action manga, so u may find the ML to be edgy somewhere (found it it only once)
~Minor Spoiler warning:
The backstory of the ML is same as of classic shounen manga, Like the trauma of losing his parents in early age, and he get supported by a outside family which adopted him and also by his childhood friend (Ginko) which acts as a informer for him for various disputes he takes. The other characters includes Tamaki (A playful senior which teases the MC often and is ridiculously strong), Yamie (a laidback women who likes to rest), Kirihiko (A blonde, belongs to a assassin family) who just want to make friends.
The manga is about how the MC helps all these characters and also how grows with them
Overall, I like the story and the 2 ova's are adapted is same art style as of manga so it's a must watch for the peeps who enjoyed the manga.
Recommended: 7/10