Oh come on, it's nothing you're not used to by now.

[ Only god knows how many marks have currently been left on Ai's body underneath her clothes. He pulls back, but keeps her hand held in his... where he tenderly caresses the resulting bite mark. Enough to hurt, but with just enough restraint that she isn't bleeding. ]

Now, I'll show you the spell, and I'll guide you through it, but it'll be on you to heal the rest once I'm done.

[ It's the perfect motivator! Besides maybe being able to clean herself up a little more next time she wants to wear a cute swimsuit. ]