Access Divine Path after completing the game

I have defeated Shiro this morning and was granted amulet of mist (for exchanging one green item) and got 2 of 4 the 15K cathen armor. After that, how do I go back to divine path? Do I have to defeat Shiro everytime I want to reenter the divine path or is there other way around?

Thanks.

You can't, ever again. ur stuck with 1/2 a set.


j/k, just beat shiro again.