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.
YMMV: Junjou Romantica
And the Fandom Rejoiced: Season 3 of Junjou Romantica being announced after years of waiting and rumors with no confrontation.
Big Lipped Alligator Moment: Miyagi, straight up until that point, suddenly grabbing a heartbroken Hiroki and trying to kiss him before Nowaki stepped in. Never showed any interest in him before, and it's never mentioned again afterwards.
Miyagi is normally pretty grabby and in other ways overly familiar with Hiroki, though. He just likes to tease his kohai.
Flanderization: Unlike in the anime version, where he really puts the "tsun" in Tsundere (until he undergoes Character Development in Season 2), Hiroki's attitude towards Nowaki in the manga is a more balanced mix of affection and irritation.
Actually the anime is pretty faithful in the arcs that it adapted for Egoist and Hiroki isn't any more tsun in them than in the manga. The only difference is that the small side chapters that showed more of Hiroki's dere side weren't adapted.
Fridge Horror: Misaki gets a dose of this when Usagi brings up telling his brother (Takahiro) about their relationship... and Misaki realizes the huge problems that arise with the situation that he's dating his older brother's best friend.
Magnificent Bastard: Isaka. Repeatedly. Especially when it comes to Akihiko, Haruhiko and Misaki, although there's a very good reason he's the director of Marukawa publishing.