This manga is definitely a must read for yuri fans. The 180 transition of the MC felt natural and wasn't really forced, despite how difficult that may be.
However, Ch19 sure took a downturn for the quality when the author decided to use common tropes (MC: "I have got shit to do but I will go along with your unreasonable request for some reason"). Afterwards they did fix the fumble, but it was a bad moment for the manga