I’m Not a Villainess!! Just Because I Can Control Darkness Doesn’t Mean I’m a Bad Person!
Koubutsu wa Ichiban Saigo ni Hara no Naka
Hugo
I loved it soo much!!! "Hugos" are weapons made by humans to use in wars and combating terrorism. They have a different sense of value and morals than humans (of course, they need to murder and may lose many colleagues during their missions). The retirement time for Hugos is after 120 years (at least). The story is about Jan, a human, that bonded with two Hugos (a lion and a black panther). It's very sweet and dramatic - at the same time, and made me feel anxious as the protagonist was. Really on my fav list, together with "Kuroneko Kareshi".
Boku no Danna-sama
As good as "Kuroneko Kareshi" and "Hugo".
Omega Shunki
The humans, for a stronger generation, crossed their genes with animal ones, thus making a new breed that has a thirty genre (omegas, alfas, and betas). The omegas "repay" society (leveling the balance of the world) by "giving away" his offsprings (they still have contact with them, but they are "given" to be happy in other couples lives too. I liked the story, very fluffy, with the unexpected "forced adoption" that, all in all, was not so hard to sympathize with, considering the way the author smartly prepared us beforehand.
Kami-sama Darling