https://wavemotioncannon.com/2017/11/05/mamoru-hosoda-digimon-interview-part-2/"We could even go as far as to say that the episode is a love triangle between Koromon, Hikari, and Taichi:
"If you ask me what her conflict is about, I think it’s a battle between her and Koromon. There’s a scene where Taichi’s just lying on the sofa, and Hikari and Koromon are eating watermelon next to him. But she’s not having a single bite of the watermelon. That pretty much is a conversation about the husband between his wife and his mistress, like “Please leave him. You can eat that watermelon all you want but please give me my husband back.” (laugh)"
"She’s not just a cute little sister, she senses that her brother is in danger, and tries to bring him back. And she’s not straightforward in doing this, she’s using all the female appeal of a second grader to win him on her side. If we had to use a parable, Hikari would be the wife past her 30’s, and Koromon would be an innocent 20-year-old girl (laugh). She’s still young, but she cannot remain indifferent to the fact that her husband just got chatted up by a younger chick. I would imagine her saying stuff like “You may get along in the Digital World, but I’ve been with him for 8 years since I was born.” or “I know everything about you two, don’t think you can hide it from me.” It’s that kind of messed up relationship."
