Takizawa commented that the complicated relationship between Takei's and his character is a selling point in this drama. However, he finds it embarrassing to have to say some really cringe-worthy and romantic lines such as "let me catch your flu bug instead" or having to look at each other in slow-motion smilingly. As for Takei, she said that she also felt shy about having to listen to such sweet words every day during the filming and has to control herself from bursting into laughter due to the embarrassment. As the relationship between the characters is subjected to interpretation by the viewers and may be seen as pure love or an extramarital affair, she is hoping that they will still enjoy watching the drama.
Sources: Nikkansports / Sanspo / Sponichi