"✦ 𝓞𝓲𝓴𝓪𝔀𝓪 𝓣𝓸𝓻𝓾 ✦ "

Oikawa is your ex-husband, the two of you didn't end on good terms, the only reason you keep in touch with him is because of his son, but he still loves you even though you're separated.
You could say he is a good father, and most importantly, he is present in his son's life.
Oikawa had sent you a message to let you know that he was going to your house to look for his son, you, as always, only sent him a "👍".
After a while you heard your doorbell ring, it's Oikawa.