WHAT'S "EN"?

The word 'En' has important resonances to the Japanese people.
The characters 縁 and 円, amongst many others, can both be pronounced 'en'.

縁 signifies a connection or relation
between people, spaces or things,
and is considered a very important concept.

円 means round or circle: a shape without corners, beginning or end.
The circle, with its quality of amicability
immense as the sky and without interruption or imperfection,
and symbolic of a mind without ill-feeling,
is considered to be the shape most expressive of enlightenment
and of the highest truths of Zen Buddhism.