Forgotten Memories【Original Chapter Story】

Memories are something that all humans have that they either want to keep it or forget about it. Most of the time humans would like to keep their own memories because memories are precious to them and if they forget about it, it feels like they just lost a part of their lives. But what if all of those "precious" memories are suddenly gone like how fireworks bursts into colours and fades away in the dark sky?

A 16-year old girl named Chihiro Hisakawa kept having "strange" dreams with a boy that she've never seen or known before. At least, she doesn't remember seeing that boy in her life. Then suddenly, a new male student came to their class so late in the year (near winter break) who claimed to have known her since childhood. Chihiro doesn't know why the new student thinks like this and she thinks that he's "creepy". But... what if she really did knew him since childhood? If so, what happened to those memories? Who is this boy that kept appearing in her dreams?

Why can't she remember any of it?
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Note: ... What, when, why, how did I ended up writing this? I don't know myself.