They are customer and shopkeeper in the mosquito net.
Suddenly lightning flashed when she leave the shop.
She was surprised and back to the shop.
And get into the mosquito net in his room.

Actually he(shopkeeper) also scared..

They are two in the mosquito net together.
They are horny soon..
And they can’t stop making love under the lightning.

Kaichu nenchu gyoushi
Yoshitora Utagawa