On top of Mt Yukawa. This big dragonfly zoomed in and grabbed a butterfly right in front of my eyes. Very impressive!
I took a few photos but the dragonfly flew off, still carrying the butterfly. About half an hour later, by chance, I came across the half-eaten butterfly further down the hill.
Anax nigrofasciatus = kurosuji gin yanma
Graphium sarpedon nipponum = aosuji ageha