Suji Kim
At this point only talking can solve all those misunderstandings, but they're both so scared of their own faults that they can't see how much they love and care for each others. But I appreciated that the author didn't just solve all their problems within a couple of chapters, because that's not how it happens in reality. It takes time, it's painful and they're just at the beginning. They can just improve together, little by little.