Sagitter's manga / #Betrayal(2)

In which our mc is killed by his best friend during a war and gets reincarnated into his sister's body. He then joins the military to help his family, because there is a war going on. Mc, however, has to dress up as a guy because girls aren't allowed to join the military. It started out well. The art is beautiful, and the characters are more or less there. However, when reading the raws, I feel as if it got worse and worse every passing chapter.

In which a girl is useless to her party and then is discarded to a slave trader because of her useless skill that is able to reverse all status effects, even the good ones. One day, she is to be killed and given a cursed sword meant to kill all who wield it. Suddenly, she is able to use the sword extremely good, thanks to her skill and escapes with another girl out into the wilderness.