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Books about Nichiko:
Playbirds Continental No. 87 Busty Adult Magazine "Nichiko" "Solange" by Playbirds Continental (1989)
Wiki information Nichiko:
Nichiko Niwano is the eldest son of Risshō Kōsei Kai founder Nikkyo Niwano, and the current President of Risshō Kōsei Kai.