Toaru Majutsu no Index - Volume 22, Proclamation of Armistice.

When others transmigrate, they are responsible for having babies with the male protagonist, and have a happily ever after. She is also a female protagonist when she transmigrates into various novels, but the female protagonist after the happy ending, when love between the couple is weathering, when the male protagonist is tired of the female protagonist, when he is cheating with a mistress, etc., and many other chicken feathers.

[Host, the task assigned to you by the system is, ‘After happy ending, the female protagonist’s bleak divorce life!’]

“Go away, s*upid system! I want to transmigrate to before ‘Happy ending’!”

One sentence introduction: Today is another day of happily divorcing.

Chicken feathers: small annoyances

- Description from Novelupdates

Amamiya Hiroto is unlucky. His life consisted of misfortune after misfortune, culminating in an unlucky death during an incident on a school boat trip, trying to save a girl he barely knew. After death, he met a god of reincarnation who requested that the hundred or so dead passengers—one of them being the girl he tried in vain to save—be reincarnated into another world.

The poor aristocrat Viola suddenly received an unexpected marriage proposal from the prestigious noble household of Duke Physalis. An average noble daughter and the handsome duke. She had been confused, thinking that nothing made sense, but the duke had his own personal reasons. A political marriage with ulterior motives, both having their own circumstances. Will this path lead to happiness or sorrow?

Aihara Runa was a person who had been living in hell of misfortune. One day she found herself in a strange stage, apparently her soul was reaped without permission and sold at an auction to gods from another world along with her 28 classmates. But there was a trouble, it seems that Aihara’s soul was extremely smelly and stinky. Instead of getting a buyer, she was thrown away and with her soul in danger of disappearing.However, when her soul was about disappear, she met an unnamed goddess who claimed herself as a god’s vessel. The goddess said that she can help Aihara to get reincarnated but with one condition, that is to bring her along and get reincarnated together. Aihara who was about disappeared accepted the goddess’ condition and got reincarnated successfully as Emmy. But apparently, the hard life still continued even after reincarnated too….If there’s no food, then let’s get some bugs!!! Let’s just enjoy this hard life together with the reliable partner [Omake-sama] inside my head and have fun instead.As Emmy managed to survive while watching and getting involved in the events of another cheat reincarnations, she grew into an irregular. This is a story about Emmy, a soul who managed to survive from disposal by gods. However, she doesn’t know that her reincarnation did not list in fate’s archive and unconsciously broke the gods’ scenario one after another.