[He's smiling, although it can't be seen through the audio.]

Well, since you're so curious...

My grandfather was the best person in his field of work in France and across Europe during his prime, and became quite famous even outside of Europe because of this. I, being named after him, entered the same field myself, and have gained similar levels of attention worldwide. Differentiating us by the Issei or the Sansei makes it easier for people to know which 'Lupin' they're talking about.