In the village of Hectare in one of the houses, there is a NPC that says he knows the answer to Life, The Universe, And Everything, but he does not understand the cryptic answer. (It's 42)
This is a reference to Douglas Adams
and his Hitchhiker's Guide To The Galaxy novels. Life, The Universe, And Everything
is the third book in the series.
The Japanese sub-title translates to Meteor Armor