Watashi ga Seijo? Iie, Akuyaku Reijou desu!: Seizon Route Mezashitara Naze ka Seijo ni Natteshimaisou na Ken  

In the game world that Iris enjoys playing, she has taken on the role of the villainess. This game is unique because it features bittersweet "Happy-Bad" Endings. If the heroine chooses one of Iris' problematic love interests, it will lead to the destruction of the world. On the other hand, if she fails to do so, it will be the villainess who will face the consequences. Despite this challenge, Iris has some time up her sleeve to prevent these outcomes. She will take any necessary steps to ensure that the heroine avoids these paths, whether it means curing a deadly illness or raising her possessive twin brother.

Watashi ga Seijo? Iie, Akuyaku Reijou desu!: Seizon Route Mezashitara Naze ka Seijo ni Natteshimaisou na Ken began as a web novel on Shousetsuka ni Narou under the title "Watashi, Tensei Akuyaku Reijou nanode, Meriba End wa Soshi sasete Itadakimasu!!" (私、転生悪役令嬢なので、メリバエンドは阻止させていただきます!!) on April 5, 2020. Starts Shuppan has released a revised and illustrated version of the series since November 4, 2020, under its Berry's Fantasy label.The first volume was published digitally in English as As The Villainess, I Reject These Happy-Bad Endings! by Cross Infinite World on February 12, 2021. The English version features new illustrations by Kuroyuki (黒裄).