I remember a manga that was similar to this one, except the roles were reversed. Instead of the heroine going after the villainess, the villainess was going after the heroine... I wish I could remember what manga I'm thinking of lol.
Edit...
One of my favorite chapters lol. Good to see things seems to be turning around slowly but surely for Tsubaki. Also great sister convo at the end there 👍... Kinda sad that she was crying in that childhood photo on page 6 though.
Decided to look at the little chapter teasers at the beginning. Greatly looking forward to a couple of those, particularly #64 and #67 lol. Also, that cover art is godly.