An Info About the Bloodiest Suzuran-Housen War
I just found some info after discussing with the community.
In the raw version of Crows, it was said that Nakai, the leader of Nakai Faction, DID NOT die after his lungs were punctured by his own broken ribs. Nakai only CLOSE to dying, but still alive.
So, Kawaishi's action by stabbing Makio to death is much more cruel despite one of his reason was to avenge Nakai, who is still alive.
In the english fan-translation tho, it was said that Nakai did die and Kawaishi reason to kill Bitou seemed like "an eye for an eye"
Now, with this information opened, now I understand why Narumi and the Bitou Brothers wanted revenge on Suzuran that much. Kawaishi is very much an asshole and a coward.
For the record, I didn't blame the translator. It was an old time translation where translation machines were still very sucks and there were no AI's back then. So, lost in translation is pretty much a common thing.