The girl at the bottom of the panel tried to seduce (and in the processes sexually harassed) the black haired girl to get back at the girl with pigtails who was friends with her. This made the blonde girl (a ghost) jealous which inadvertently caused long term collateral damage to another girl and basically became a huge mess.

It’s a long story that can’t be easily explained without reading it. The manga has a similar setup to Mieruko-chan, but it’s actually yuri rather than just bait. It has a unique blend of tragedy, comedy, slice of life, mystery, horror, and yuri romance that I’ve never experienced anywhere else. Mietemasu yo! Aizawa-san is peak and I highly recommend it.