such a cute story that reminds me of kimi ni todoke. it's about a girl that felt as if she was invisible because nobody talks her and nobody seems to notice her even if she is standing right in front of them, until when she was 6-7 she built a blog to talk about her day and meet new people, she met black rabbit and mega pig and became very good friends that they can count on. but believe it or not black rabbit, the one that gives the main heroine a lot of advices to make friends, was in fact Teru (a friend of the guy that changed the heroines life)
Koko ni Iru Yo