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.
Gen was surprisingly one of the most popular characters from the original game, which led to him becoming a member of the Kazama Family in the later versions.
There was a popularity poll in summer 2014 that finished at the end of August. Only three of the original heroines placed in the top ten with the highest being Wanko in fifth.
Margit placed first in the summer 2014 character poll despite being only a supporting character with a short route.
Lee, a character that barely even had a name in the original, managed to reach sixth place with barely a hundred votes separating her from beating every original heroine.
Benkei made it to fourth place, giving her triple the votes of her boss, who only made it into the top twenty.
Perhaps most strangely of all, minor Punch Clock Villain Rinchuu managed to secure third place with nearly twice the votes of Benkei. Her fandisc hadn't even been released yet, meaning that unlike the above three she didn't even have a route.
Ho Yay: Yamato and Cap's close friendship coupled with Capt's lack of interest in girls leads to this and is Lampshaded relentlessly.
At the end of Monshiro's route, Miyako, Momoyo and Capt all declare their love for Yamato and acknowledge Monshiro as a rival. Capt clearly doesn't get what definition of "love" they're using.
Gakuto and Moro apparently give Miyako BL vibes. The fact that Gakuto finds Moro cute as a girl doesn't make it any better.
Touma intentionally invokes this with Yamato to make him uncomfortable.
Les Yay: It would be easier to list the characters who don't have this sort of relationship with at least one other character. To name just one, Momoyo flirts with girls far more frequently than she does with guys.
The Big Sister types in general tend to be pretty openly bisexual.
Nightmare Fuel: In the Visual Novel, at least one fight scene with Momoyo emphasizes the violence with FMV shots of breaking bones in X-ray views.
There's also Miyako's death glare in the visual novel... *shudders*