Nikko Shonin, Nichiren Daishonin’s designated
successor, was born on March
8, 1246, in Kai Province (present-day
Yamanashi Prefecture) Japan. In 1258 at Jissoji
temple in nearby Iwamoto, Nikko met
Nichiren Daishonin, who was reviewing various
Buddhist scriptures in preparation for
writing “On Establishing the Correct Teaching
for the Peace of the Land” in the temple’s
sutra library, and chose to follow him as his
disciple.
As the designated successor of Nichiren
Daishonin, Nikko established the doctrine that
regards Nichiren Daishonin as the Buddha of
the Latter Day of the Law and the great mandala,
which Nichiren inscribed, as the object of
devotion. The school of Nichiren Buddhism as
founded by Nikko is called the Nikko lineage or
the Fuji school. Nichiren designated five other
priests as seniors in charge of protecting his
teachings.
The doctrine of the Fuji school may be
understood through the concept of the three
treasures. Nichiren Daishonin is regarded as
the treasure of the Buddha, the Gohonzon as
the treasure of the Law and Nikko as the treasure
of the Buddhist Community.
In contrast, the five senior priests did not
view Nichiren Daishonin as the original Buddha
of the Latter Day of the Law. Contrary to Nichiren’s
own teachings, they declared themselves to
be priests of the Tendai school and eventually
propounded their own teachings that are not
consistent with those of Nichiren Daishonin.
Nikko refuted those erroneous doctrines in writings
such as “The Guidelines for Believers of the
Fuji School” (Gosho Zenshu, pp. 1601–09) and
“On Refuting the Five Priests” (GZ, 1610–17).”
The essential creed of the Nikko lineage is
as follows:
1) The Gohonzon as the Basis—The Nikko
lineage regards the mandala inscribed by Nichiren
Daishonin, that is, the Gohonzon, as the
object of devotion. On the contrary, the schools
originated from the five senior priests use a
variety of objects in worship, including a statue
of Shakyamuni.
2) Kosen-rufu—In his “Twenty-six Admonitions,”
Nikko states, “Until kosen-rufu is
achieved, propagate the Law to the full extent
of your ability without begrudging your life”
(GZ, 1618). Nikko regarded one’s practice
for kosen-rufu as the basis of faith. This spirit
of kosen-rufu is evident in the efforts of
Nikko and his successor, Nichimoku, in
remonstrating repeatedly with the shogunate
government and the imperial household.
Nikko’s efforts to foster capable disciples and
send them throughout Japan also clearly
demonstrate his desire for the propagation of
Nichiren Buddhism.
3) Direct Connection with Nichiren Daishonin—
Nikko regarded Nichiren Daishonin
as the original Buddha of the Latter Day of the
Law and the fundamental teacher. In so doing,
Nikko established the faith of Nichiren Buddhism
and inherited Nichiren’s spirit. This
contrasts sharply with the attitude of the five
senior priests who regarded themselves as
T’ien-t’ai’s disciples. They asserted that even
in the Latter Day of the Law, Shakyamuni
should be regarded as the lord of teachings
(the Buddha revered in a particular school)
and Nichiren Daishonin merely as a messenger
to spread Shakyamuni’s teaching. On the
contrary, Nikko acknowledged Nichiren as
the lord of teachings in the Latter Day of the
Law while viewing Shakyamuni as the lord of
teachings in the Former and Middle Days of
the Law.