Haine is Haine. Haine mostly talks in third person to others. Haine looks like a kid but Haine is ageless. Haine uses she/her but doesn't care if you use he/they when talking about everyone together.
Haine doesn't like to talk to people. Haine uses Touma as a proxy. Haine looks like Haine from Summertime Rendering but she is not that Haine.
Haine might be a fragment. Haine isn't here a lot. Haine was born on May 28th.