Not a single clue, but maybe you can find it here? http://www.anime-planet.com/anime/tags/bullying
please save my earth, it has old art in the beginning but that is exactly the plot you are describing. The story is phenomenal.
http://www.mangago.zone/read-manga/please_save_my_earth/
It's called please save my earth. There is another manga that is related to it as well.
http://www.mangago.zone/read-manga/please_save_my_earth/
The anime is good too
Thank you!
Thank you!
It's about a young high school girl who was actually picked on by this little (maybe around 6)boy and one day while she was babysitting him, he fell out a window and had to go to the hospital. After that the boy gained a very strange ability and the girl began to receive these flashes or images. They were in space and in the end, all the people in her dream ended up dying. There were about 6 other kids who also had this problem and tried to solve why they each were having these weird flashbacks.