I didn't know what the hell G1 was at first. I've never heard anyone call it that, ever. I've heard Genkai before, And Limit Break (LB) seems to be the standard among the english speaking folks. Abbreviating a word from another language might cause confusion. Just saying.
On the main topic, how did said person get to the first limit without making a single friend? Unless said person only made 1 friend who started at the same time and you both decided to take whm to 50 how hard can it be?