SEN

Sen summary:

An unlikely pair and their adventures in the mythical past. Burly ronin Kusanagi looks after the physical well-being of various characters the two come across, while the slight, "blind" Sensai attends to their spiritual predicaments, granting wishes in exchange for souls.

Note: This series is comprised of two volumes with three episodes each, plus a self-published ~50-page book with two shorter episodes. All chapters can stand alone, but the two protagonists are the same.