Simply put, this is a lighthearted, feel-good story about face-slapping the original scumbag and saving the protagonists!
In stories that torment the protagonist, the beautiful, adorable protagonists are abused until they're shattered and utterly humiliated. To torment them in every possible way, the male leads usually send their closest friends, known as the vicious villains, to torture the protagonists first, then take over at their leisure.
The unlucky transmigrators, who accidentally end up in these worlds, read the scripts.
Vicious villain? What kind of psychopath wrote this?
Don't villains have lives too?
The transmigrators, now awakened, tear up the scripts and put on a show every chance they get, turning stories that torment the protagonist into sweet romances full of affection.
Why aren't the protagonists being tormented anymore?
The transmigrators plant their feet on the original scumbags' heads.
Who said I have to torment that particular protagonist?
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Arc One: A pitiful shadow guard used as a teaching tool x a gentle, controlling, black-bellied daddy
Arc Two: A female general insect exiled to a barren planet x a sick, male insect with a wing-collecting fetish
Arc Three: A prince of a fallen kingdom forced into a political marriage x an enemy general who destroyed his country yet teaches him revenge
Arc Four: An Alpha abandoned by his family and left with nowhere to turn x a top Enigma CEO disguised as a beta
Arc Five: A beautiful cat beastman who escaped an auction x a black panther commander at the top of the food chain with an extreme fur fetish
Arc Six: A sentinel whose mental sea has collapsed and whose rank has fallen x the Tower's most useless F-rank logistics guide
Theme: Helping others is helping yourself.