Shingeki no Kyojin dj - Love Letter
Levi picks up Eren, a child who hates Alphas. Eren grows up with him. All the while Levi never went out of control for his pheromones. Eren falls in love with him but then finds out Levi already has a mate.
Shingeki no Kyojin dj - Hangyaku Unmei
Levi is an Alpha but is impotent and has ED so Eren is an Omega but tops.
Shingeki no Kyojin dj - Sakakazu no Hana
Shingeki no Kyojin dj - Egoist
It's ongoing here in mangago but it's actually finished in myreadingmanga. Anyway, it's an AU where Erwin and Levi are doctors and Levi finds out he's pregnant but doesn't wanna tell Erwin.
Shingeki no Kyojin dj - Sex Titans
A Sex Pistols parody for shingeki no kyojin. It's Eren and Levi so it's a meh for me.
Shingeki no Kyojin dj - Mihitsu no Koi ni Yoru Ai