This trophy is awarded for meeting Tantris for the first time.
Date - Friendship Level - Location - Description
Year 2 until end of game - 0 - Any dungeon up until then other than Catacombs - A scene will occur where you meet him.
Year 2, Day 3 - 0 - Anywhere - Automatic scene between Tantris and his father.
Year 2, Day 6 - 0 - Workshop - Tantris will introduce himself.
The trophy will unlock at the end of the scene.
Notes:
- Multiple character dates are close together during this time so you may want to refer to a walkthrough if you are going for the true ending on the first play through.
- I would suggest quickly going to the Forest and back (Costs 2 days).