I don't really like when an episode is too short and 13 minutes can be really short. However, I love how in those short 13 minutes, the series can make me feel a lot of emotions.
I truly find Ainosuke and Okumi endearing. I'm usually not a fan of age-gap relationship, but this one is really sweet. They both have worries and insecurities. Ainosuke wants to be seen as someone reliable and experience while Okumi doesn't want to make mistakes in this relationship as he previously experienced in his past marriage. They want to make this relationship works and they are able to navigate the difficulties by communicating better than many other couples I've seen and know.
However, they still have a long way before being truly confident. I'm afraid that Okumi's nephew is going to be a real treat to their relationship. Even if he isn't actively trying to sabotage the relationship, he will certainly become the catalyst for all the insecurities and worries the couple still has because they are at the beginning of their romance. He is younger than Okumi so the latter will feel like his nephew has a better chance with Ainosuke. I just hope the main couple will be able to overcome the difficulties to have a tighter bond at the end.