peak; summit; ridge; back of a blade
striking with the back of the sword
clouds that stand like a mountain peak during the summer
rim of a volcano (esp. Mt. Fuji); wrestling ring; dire or risky situation with no room for error; sink-or-swim position
garden maple; komine maple; acer micranthum
Japanese cherry birch (Betula grossa)
Japanese alpine cherry (Prunus nipponica)