Ah man I love this series.
"Jindere" is just so perfect, so many other series might have characters that act like total bastards but have people fawn over them anyway explaining it with some half assed "he's kind" comment. Here you really get the feeling the cooking club really do love and appreciate Jin, they see and understand his actions as much as the reader does and makes their friendship that more believable. Even better Jin hasn't really dropped his guard or changed his behavior at all, it's just that he's an overwhelmingly nice person that he can't effectively hide it from people for long.
Vampire bat is cute, another weirdo added to the harem, but Lanka is still the best.