Paulownia tomentosa
From 1933 to 1934, a new wing of the house was constructed on the previous site of the garden: a Western reception room and seven Japanese-style rooms. One of the users of the reception room was Isoroku Yamamoto. , this room is a museum with historic materials related to the Japanese navy. Seven Japanese-style rooms are composed of various woods such as Paulownia tomentosa, rosewood, Chamaecyparis obtusa, maple and pseudocydonia. The Momiji (Japanese maple or Autumn leaf color in general) Room was top-grade and used by various admirals such as Isoroku Yamamoto. The room came to be known as the "chokan-beya" (the Admiral's room). In the second floor of the new wing is a large room as large as 160 mats. Komatsu Yamamoto, the first mistress, used to appear in Japanese-style parties until she was 88 in 1935. She was given a gala 88th year birthday party. Then, she retired and died at age 94 in 1943.