4/5 or 7/10 - The ML is pretty damn creepy, obsessive, stalkerish, and borders on predatory, but his love is still sweet (other than what I listed), and he's funny as fuck. He's masochistic, which makes his character funnier. And, the FL's rejections, harsh responses, and how he reacts to it is just hilarious! She doesn't confess until the last chapter. She started liking him around halfway through the manga. He fell for her instantly (when she called him disgusting, while he was coming onto her. He immediately fell for her and proclaimed his love for her - that it HAD to be her for him). I love the ML's sister/the FL's best friend. She's really stoic and cool. May re-read.
Koi to Yobu Niwa Kimochi Warui