After finding pact rings and making new pacts, you seek the Ninja Village.
Make sure to go to Ary (the city on the continent that is always dark) and talk to the woman across from the soldier in the pub.
Then go to the lake of Ymir (north of Ary) and make your way to the Elven village.
Go into the weapon store and have them fix Chester's bow. Spend the night at the inn.
Buy a Dark Robe at the item shop.
After you get Chester's bow, go into Treant's forest.
Have Klarth/Claus ready to summon spirits, and equip him with a Mystical Rune. Equip Cless/Cress and Chester with a Flame Mantle, Mint with a Princess Cape, and Klarth/Claus with his Garnet Ring.
Go north three times, west three times, and north three times. Talk to the girl. When you get Arche back, equip her with the Dark Robe and Star Broom.
Equip Cless/Cress with the Muramasa right away.
Buy the painting from the guy in the left side of Suzu's house who has three dots over his head.
If you want to buy any food, buy Butter. It is the most cost-effective of all the foods that they sell here.
Leave town by the east exit and go east to find a chest that contains the spell Flare Tornado. Then go back into town. This time, exit west, follow the path, and go down to find a chest (Blue Crystal Rod). Equip Mint with the Rod right away. Then go back into town.
The enemies in this part of the forest provide a lot of money and experience. If you want to level up here, equip everyone with fire-protecting equipment.
It is recommended to reach at least level 50, if not 60, before proceeding.
When you are ready to leave, use the south exit of the Ninja Village.
Your next destination is Freezekill, which is southeast from the Ninja Village.