The show follows a trend common in shonen/non-shoujo romance shows of the 2000s, in which an unassuming love interest is introduced with little screen time, while the male protagonist develops chemistry and dynamics with another character. Only to be revealed at the end that his feelings for the latter were superficial, and that he has been in love with the former the whole time.
Ten whole episodes of this anime focus on Jun's relationship with Yuuhi, their development, how they come to terms with their differences, and how they build their chemistry. Until the final cour, when the show pulls a "sike!" and reveals that he actually likes his sister.
I saw this happen in True Tears, and I hated that anime for it too. There is nothing profound about writing false romances, and adolescence getting the better of young people. Jun's confession to Yuuhi and his subsequent realization of his feelings for his sister are explained by his impulsiveness. He did not want to confront his love for his sister, and preferred to find solace in the excuses he made to hide it. Yuuhi was an outlet, and she was understandably angry about it. In reality, they should have either done away with this dynamic entirely, or doubled down and focused on his past developments with his sister to provide viewers with some context.
This writing trope may seem cool and deep to some, but it is not. It is weak, overused, and frankly a spit in the viewer's face. If you wanted to run something like this by the audience, you should have given sufficient developments or flashbacks or anything to create credibility between Jun and his sister's relationship. But alas, the show completely chickens out of it in what I can only deem as pure writing cowardice.
Also, it's tagged as harem. It is not. I can count on four fingers the amount of characters that have some semblance of feelings for Jun. I can count on three fingers the amount of characters that might be at least a little more interested. And finally, I can count on two fingers the amount of characters that love him.
This show is about Yuuhi and Jun's sister (who's so incredibly forgettable that I can't even remember her name). Since when can you categorize an anime as harem with literally two characters aiming for the male lead?
Overall, this is another shoddy romance anime that's a product of an overused troupe that plagued Japanese shonen romance writing in the 2000s. It's got decent comedic elements with a really good cast of characters, but an absolute misfire romance. It's average at best, however I would recommend you pick up something else and give this one a wide berth.
