Issay

The name Issay is primarily used in Japan and is often given to boys, though it can be used for girls as well. Its meaning 'born on Sunday' is derived from the Japanese words 'ichi' (one/first) and 'yōbi' (day of the week), specifically referring to Sunday. This type of naming, based on the day of birth, is a traditional practice in various cultures, though less common in modern Japan for first names.

While not widely known outside of Japan, the name has a distinct and clear meaning within its cultural context. Its usage is relatively rare, contributing to its unique and somewhat exotic appeal in other regions.