The summer-like hot sun mercilessly baked the back of my head. I rolled up both pants and dipped my feet into the cool water of the lake. The bluish mirror surface reflected rare fluffy clouds and crowns of nearby trees. A turquoise dragonfly flew past and hovered nearby over the water surface, sparkling its wings in the sun.

It's good to be a dragonfly, I thought. You fly all day long back and forth and do not know grief. The fat frog appeared out of nowhere. A swift throw and the life of a tiny creature was cut short.

In the same way, a couple of hours ago, my last...