
It lasts a long time and goes for basically years, with Andante eventually suffering ptsd and going delusional over him leaving his entitled booty. Beautiful job on the regret arch, true revenge by Jin. They cut important background information though allude to it here and may explain Jin getting fed up finally to you. He suffered trauma as a child actually and the original esper that marked him did so then, he had to run after leading to the death of the abusive partner.
That's something andante brought back to him during relationship and he couldn't take it anymore. It's horrible and Andante deserves his suffering from using Jin during this.
HEA end, with proper REGRET and suffering on level or above what he did to Jin, so it was fully acknowledged he changed and repented before they get together again..
That ch 20 proves he's still incompetent and felt no real guilt....... Meanwhile, MC is being an airhead and I don't like her instant forgiveness over dragging the divorce out.
(⊙…⊙ )
Please spoiler