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The Lone Keeper

Retrogression Keeper #1

The Lone Keeper

An OP MC Fantasy Isekai Adventure

Jonathan Brooks

Publication
June 25, 2025

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About the series

Retrogression Keeper

Books in series
3
This book
#1
Retrogression Keeper

Reading order

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Books in series order. The current book is highlighted.

#1The Lone Keeper #2The Alternate Keeper #3The Final Keeper