A Slight Smile is Very Charming - Part 14 - Torturous Quest

Breasts are NOT supposed to spontaneously grow for no reason.Women's personalities do NOT flip on their heads without warning. These are two things Tsunade believes wholeheartedly.Until Hinata's embarrassingly large girls begin to expand even bigger than before. Heralding her devolution from a sweet and innocent young lady into a foul-mouthed slut with tits like weather balloons. Tsunade intends to find out why.

He Gui can freely travel between reality and the parallel world in 1985.

The disappearing Chinese rhino appeared.

Spotted soft-shelled turtle and white dolphin appeared again.

The extinct local pigs are on the table again.

He Gui: I am as stable as an old dog in the real world, but I attack everywhere in the parallel world. PS: During the new book period, there are two updates every day, 8 in the morning and 6 in the evening. Mengxin asks for recommendation, collection, investment.

- Description from novelbuddy

A series of short stories in the world of Toaru Majutsu no Index organized into chapters featuring Kanzaki Kaori as the protagonist, going around the world and space doing missions for the Church of Necessary Evil, however, there is more than meets the eye as each incident is connected.

One chapter was bundled with each limited edition release of the Toaru Kagaku no Railgun anime DVD and BDs, with all of them together being equivalent to a single normal Toaru Majutsu no Index volume