Mirei had a large circle of friends that he established through his work with gardens, and made friends with Isamu NOGUCHI, the sculptor in the United States, who visited the residence of Mirei SHIGEMORI several times.
重森邸を度々訪れたアメリカの彫刻家・イサム・ノグチとの交友など、庭園を通じた三玲の交友関係は広かった。