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I felt so sad when he said he became a coward and cried. Also when he said he lost faith in love.
The way they both sort of undermined their stories into "just another one of those you've heard a lot" kind of stings. It's that half full half empty viewpoint.
Sad things are still sad, but everyone has their own sad stories so you're not special or anything. But they found someone that made them believe that someone will prove them wrong.
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Here's what happened: Yamamoto Group caused Kuze's family to break. Iirc, Shimojou's group was close knitted to Yamamoto. He was leaking information to Kuze and Kuze to the police organization to finally bring him down. Hence the "congrats on revenge" by Shimojou.
They ran away somewhere else, but only for a year. Kuze was still connected to the police and since then, Shimojou decided to go back and work as some sort of a bait for the police. Kuze was upset, but Shimojou who thinks everything is boring wants to do it for himself and Kuze, so yea.
HAHAHHAHAH I JUST WANT TO SEE SHIMO TOP BECAUSE KUZE HAS ALL THE TALENT TO BE NEKO, WHAT WAS HE TALKING ABOUT
I tried to hate Ryuh Han but I couldn't and I trusted my gut feelings :D
It's amazing how easy things are when you finally manages to move on, this is probably one of the smoothest moving on from unrequited love ever