The clue for 5D is an unreal Pokémon reference. Blew my mind. The word “originally” makes so much sense because there were 151 Pokémon originally, right?
Thanks! Yes, Gen 1 had 151 Pokémon — I kind of stumbled into that clue after going with the Pokémon angle for MISTY which made me realise the potential connection with "151", very happy with how it turned out!