I Roam the World by Playing Famous Writers

As an ordinary high school student, Chishima Aya has a secret. Every so often, the System tosses her into a different world. She has to play various literary greats and complete all kinds of bizarre missions assigned by the System. For some reason, though, the great writers in her world, who all wielded pens, have become armed characters in the System's worlds.

Planned worlds: Death Note's Osamu Dazai, Hunter x Hunter's Chuya Nakahara (more to come later)...

Warnings:

1. The heroine's appearance changes to match the literary figure she's playing, and her personality during that time is based on theirs.

2. The heroine's appearance changes, but her height and gender do not.

Theme: The protagonist plays the role of a literary great