Society of Saint Vincent de Paul
In 1947, the local Society of Saint Vincent de Paul (SSVDP) built a simple two-tatami teahouse-like structure for him. Nagai named it "Nyokodo" (如己堂, Nyoko-dō to, literally "As-Yourself Hall", after Jesus' words, "Love your neighbor as yourself." He styled it as a hermitage and spent his remaining years in prayer and contemplation.