 If you liked
Kimi ni Todoke
|
 ...then you might like
Kimi ga Waratta
|
Both are very similar: a quiet lonely girl ignored by her classmates that is seen as scary but in fact she is very kind hearted, and loves pets and plants. The most popular guy in her class ends up noticing her and helping her, while at first she truly admires him for his kindness, later she develops feelings for him.