Kyoto

二人

ふたり.

Count again.

二本

にほん.

The written quantity
survived.

Its reading had not.

助数詞

人 for what walks on its own.
本 for what has to be carried.

二~~人~~本

二 holds.

Everything after it
was already decided
before it got spoken.

Count again.

二人

through

二本