All this talking and diving comes across as one giant sexual reference. The girls are all mopey, hesitant and worried before their "first time" with a dude, so get ready for a lot of suggestive lines. One of the best refers to you inserting a Grathnode Crystal into her access port - "To be honest, I'm a little scared, since I've heard that it hurts when you put it in."
What's a Grathnode? It's one of a billion little trinkets you'll find lying around the tonelico world. Each has an attribute assigned to it (like "Kinda Defensive" or "Tingling") that can affect your weapons, armor and Reyva Teils. There are so many of these damn things you can spend a huge chunk of time trying them all out, just to see what's the best fit. We said it once in our preview, but it bears repeating that this system works a lot like the materia setup in Final Fantasy VII. If you want to get lost in it, you can, but if you want to press on and just go with obvious choices, that works too.