What strikes me most about Michi is that these two have absolutely no ego when it comes to each other. They are willing to forgive and forget each other's faults. They hurt each other pretty badly, but the minute they realise each other's true feelings they just let by gones be bygones. They do not hold it against each other.
This is a very important quality to have in a relationship. It is not very easy to forget the hurt that a loved one has caused. But if one keeps dwelling in it for long, even after the loved one has realised his/her fault, the relationship will stagnate and cannot move forward. The fact that these two are more than willing to forgive each other just shows how precious their relationship is to each other.
For deep within their hearts they know that they are meant to be together. No matter what challenges they face, this thought will always bring them back together.