Please help me to search for a manga

[o3o_143]

Please help! I've been trying to find these manga, but I can't remember its title. The plot goes something like this:
It's about a girl who's abused at her home and bullied at school. One day a guy sees her being bullied by her classmates at the park and instead of helping her out he takes a photo of her. The guy ends up being obsessed with her and becomes a stalker. But one day the girl finally gets tired of everything and tries to kill herself but is stopped by him and so he kidnaps her instead.

 

[TonyHawk]

https://mangadex.org/title/22284/sachiiro-no-one-room

 

[o3o_143]

Thanks you so much! You have no idea how thankful I am. I had it stuck on my mind for so long but couldn't really remember its name.