I can't remember much I know the story has a sequel I know one of the teachers is like a history or science teacher and one is an art teacher and I know that the story starts with them sleeping together in a drunken one night stand?

It could be Mirai no Kioku ... 😕

Yes yes, I know I make longwinded comments, but that's just me >.<
I should proof read my comments more, but I won't...
So keep in mind I'm filled with typos

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Yes thank you