Onesimus asked you to give Sonirim a chance to make up for her mistake. Go to the second floor of the Fortress and meet her.
Step 1. Talk to SonirimAn Apprentice Teleporter in the corner of the second floor of Eltnen Fortress. She is practicing hard to become a Teleporter..
Step 2. Collect the essence from a Moss SpiritA spirit found around a large stone structure near the hill in the Manduri Village. and hand it to Sonirim. (You need to collect: Earth Essence)