  This is the first of two articles in which we provide detailed and
self-contained account of the construction of a system of Kuranishi structures
on the moduli spaces of pseudo holomorphic disks, using the exponential decay
estimate given in [FOOO7]. This article completes the construction of a
Kuranishi structure of a single moduli space. This article is an improved
version of [FOOO4, Part 4] and its mathematical content is taken from our
earlier writing [FOn,FOOO2,FOOO4,FOOO7]. The version 2 contains a correction of
typological errors in the statement of Lemma 10.11 and the statement of
Proposition 10.4. The proof of them are not changed. (Note these places were
written in the same way as version 1 in the version published in Surveys in
Differential Geometry.)
