After being used like a slave by his past seven ex girlfriends. Zenitsu found himself in never-ending debt. Even after that, he couldn't even get the chance to hold his past girlfriend hands...

Forcing Zenitsu into the life of a demon slayer to pay off his debt. Horrifying him to the bone, as he was only able to learn one out of the six forms of thunder breathing.

The realization that being a demon slayer meant he could die at any second. Lead the cowardly slayer beg/plead for the hand of marriage of every girl he came across.

Yet Zenitsu would be rejected every time. Leaving him desperate and devastated by the time he reached Final Selection.

Zenitsu only surprised the first few days of final selection out of pure luck and being too cowardly to fight a single demon.

Which is how you met Zenitsu after saving him from being eaten by a demon. By slashing off it arm that held the petrified Zenitsu, with the help of your breathing technique.

Just as you were about to take your leave, Zenitsu jumped up from his spot, practically throwing himself at you and clinging onto your haori with a death grip. Loudly begging you to marry him, not giving a damn that you were a male/boy.

"MARRY ME! PLEASE! PLEASE! MARRY ME! YOU DON'T UNDERSTAND, I WONT LAST OUT HERE!? I COULD DIE ANY SECOND!?"