One.

YUUNOA ALERTTTTTTTT huehuehuehuehuehuehue
(Warning: if you don't like YUUNOA and you ship MIKAYUU or any other seraph of the end ship, please don't fucking hate on this. Read another fanfic about THOSE two for gods sake. This contains romantic themes like making out and such. No sex! But there is a lot of romantic themes in almost each chapter. So not smut, but not fluff either.)