I recall that while Hōrai immortality means your body's pretty much unchanged, it seems hair and nails still grow normally?

For one, Mokō's hair was short by the time she drunk the elixir, right? 🤨 Actually, how young was she when she drunk the elixir? She looked... pretty young there. Then shouldn't she be – especially given the average height at the time – like, really short?

Or does the Hōrai elixir make you grow big? 🤔