These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Break the Cutie: There's a good reason for Akemiya to fall in this category, considering that he gets abused and blackmailed by his sister, molested by random pervs, made to confess to random girls, and later on, made to confess his love to Sumika knowing perfectly well that she's going to reject him, since she had done so already. And let's not forget that his budding modeling career gets offed in a freak accident. Granted, it's a comedy, but still...
Hollywood Homely: Averted, actually. Sumika is frequently addressed as "not cute;" however, this is not referring to her actual appearance, but her personality. As an assertive, outspoken sports-player, Sumika does not have the appeal of a "cute" girl. Just by looks, though...
Moe Moe: Sumika wonders how she could invoke this trope to appeal to Ushio.
Lotte out-moes them all. "German beauties are not to be trifled with!" Indeed, Sumika...
Aoi is sometimes disliked by fans as well, for similar reasons.
Special Effect Failure: The picture Noe-san uses in the anime when she likes to joke about how long she takes care of Sumika. She needs to know about Photoshop.
The Woobie: You wouldn't think an Action Girl like Sumika could garner such a status, but it's hard not to feel sorry for her when Ushio blithely crushes her in the middle of their moments. Azusa and Akemiya both have moments where you feel really bad for them too, but that may not be to the strict letter of the trope.
Later Ushio becomes immensely woobie-fied herself, when it is revealed through flashbacks just why she keeps Sumika at bay.
Azusa gets one as well: "Was I...in the way?" She bounces back pretty quickly though.