1. Idk what happened to him but I think Tanaka go back to the apartment to kill Harada. In the end he couldn't do it though.
2. Maybe he realized he fall in love with the gentle Harada.
3. He got jealous, or more like angry with how Tanaka admired Yanase group's boss like "faithful dog". He like a child with some past trauma, don't know the right way to treat the one they love.
4. Because Harada already killed "Tanaka".
5. Urgh, I want to see that too
6. I hoped Tanaka got married with some wonderful woman, live happily and torture Harada forever (╬￣皿￣)凸
But then, won't the woman get killed? lol
I think it's harada's nature to seek for more power and money, even betrayal will do.
I wish that the story could go on longer because the ending didn't satisfy. Let say,
1. What happened to the survivor of Yanase group? Why Tanaka left him and back to apartment?
2. Why Tanaka back to Harada, I know he is not forgive Harada but he accepted what Harada gave him
3. Why Harada chose to betray Yanase group if he loves Tanaka?
Yanase is outdated group that didn't stand out so much. Why Harada betrayed them and wiped them out?
4. How can Tanaka forgive Harada, he killed his parents, he killed everyone on the group.
5. I hope to see Kawaguchi group downfall
6. The ending where Tanaka still cold towards Harada is better than accept and forgive him easily. But I just hope Tanaka get better ending. I mean, he lost everything, why should he forgive him. Seriously, this story need more chapters. That's what I think