Yeah, her hair thickness skill definitely increased. Possessing equivalent mass and volume to the whole rest of her body, it adds... +1 hit point to her.
NanojaaOoh!Your tea-making skills have increased!FluffWhat's changed about you?Nanojaa!?PlopShockSo?GlpYou have become Kai-2, haven't you, Uiharu!SmooothBlpIron