The connotation contains a small amount of curses and a lot of irregularities.
Curse back:
Five/summer/tiger/hui/thorn/nail/hope/nitrate, etc.
Fumino:
Zai/Zhong/Lan/Tuo/Sen/Fu/Qi/Jing, etc.
Bump:
Lei/Jia/Rui/An/Jin/Zan/Ka/Pa etc.
Purpose: World peace