Quick Transmigration: She's a Pro at Breaking the Plot as Everyone's Favorite

[Everyone's Favorite + Airheaded Beauty + No Fixed Couple + Everyone Has a One-Sided Crush + Shameless Mary Sue + Love at First Sight + Sweet Romance + Not a Strong Female Lead]

669 is a newly minted Supporting Female Character Substitute System. It watches as all the Systems manufactured in the same batch find Hosts and get to work, while it wanders around like a headless fly.

By chance, it meets the darling it falls head over heels for at first sight.

Looking at the unbelievably beautiful Chu Tao, 669 cries out that it's struck gold!

It just wants to know how there could be anyone in the world who suits its tastes so perfectly.

It thinks it'll have to talk its darling into signing a contract, but she agrees the moment it opens its mouth~

But then...

Why is the plot getting more and more messed up?

Why are the male and female leads both clinging to its darling? Is this right? Is this right?!

And if the leads aren't acting normal, fine, but why are the supporting male and female characters forcing their way into the mix too?

No... You can go off-character all you want, but please don't drag us into it!

In the end, after watching countless plotlines go off the rails, 669 looks at Chu Tao, who's sitting beside it as if nothing has happened...

669: Whatever. Tao Tao's happiness matters most.

[The author has a note at the end of Chapter One about content warnings for this book. Please read it carefully.]