We already know that their relationship is toxic, mc provokes him and seoho follows him and worse, and with violence. They just need to work on trusting each other, although it's easy to say:
Seoho comes from a complicated past and mc has a brother who messes up all the time and his life was basically idealized by his mother, who also had a hard childhood and let's not forget that mc has no experience in romantic relationships.
In my opinion the best thing would be for mc to end up alone or with another normal partner (which is difficult because seoho is not willing to let him go either) but being realistic they will probably end up together somehow.
We already know that their relationship is toxic, mc provokes him and seoho follows him and worse, and with violence. They just need to work on trusting each other, although it's easy to say:
Seoho comes from a complicated past and mc has a brother who messes up all the time and his life was basically idealized by his mother, who also had a hard childhood and let's not forget that mc has no experience in romantic relationships.
In my opinion the best thing would be for mc to end up alone or with another normal partner (which is difficult because seoho is not willing to let him go either) but being realistic they will probably end up together somehow.