When I came up with Haru and Tsukasa in 2019, it was drastically different than the final product more than five years later. The comic went through different stages throughout the years.
Tsukasa was initially called Hinata before witching quickly to Kenji and was a lot more stereotypically Japanese than he is now. After less than five episodes, I wisely got rid of this controversial aspect. He was also a lot more boyish than he was now. When he was heading in the direction of the wholesome crossdresser, I decided to rename him Hinata again before giving him his unisex name.
Haru also appeared in the original comics, but she was a white girl named Sophia, and served as Tsukasa's love interest. Of course, that would never fly today because Haru and Tsukasa are both best friends, not to mention the fact that Tsukasa's asexual. Sophia was changed to Hitomi, Tsukasa's friend who lived in Japan. Hitomi was later renamed to Haruka, Tsukasa's wholly Japanese-American friend, eventually becoming Haru, Tsukasa's half-Japanese half-Tamil best friend.
Also, the two were twelve-year-old middle schoolers who aged-up quite a bit to eighteen-year-old high schoolers before releasing the comic.