As someone kindly pointed out, the plants here include some invasive
or unknown new species. I will take the time to observe them..
Patrinia villosa / Otokoeshi オトコエシ
Patrinia villosa is
a perennial found in sunny mountain valleys, growing to 0.6-1m in
height. Leaves are opposite, pinnately cleft in oval-like oblong
lobes; the one on the top is the biggest. Many white flowers come in
scattered inflorescences and bloom in August-October.