Alright, so the asshole learns that being an asshole means hurting himself the most. There is still a lot of ground to cover between that realization and the redemption and reunion which the mangaka seems to want. There are the matters of owning up to his flaws, recognition of the hurt he caused, then repair and restitution. There is the problem of zero trust and the inevitable guarding that comes with it. How does he plan to overcome that? Recognition of what he lost isn't even the first step. It's only the "D'Oh!" moment.
Alright, so the asshole learns that being an asshole means hurting himself the most. There is still a lot of ground to cover between that realization and the redemption and reunion which the mangaka seems to want. There are the matters of owning up to his flaws, recognition of the hurt he caused, then repair and restitution. There is the problem of zero trust and the inevitable guarding that comes with it. How does he plan to overcome that? Recognition of what he lost isn't even the first step. It's only the "D'Oh!" moment.