Light requests allow users to make requests within a character limit. The character limit for Japanese, Chinese (both simplified and traditional), and Korean is 240 characters, while the character limit for all other languages is 720 characters. A single Light Request requires 300 JPY. All Light Requests are marked as public requests unless a user has subscribed to a monthly plan, in which case they can make it private.
For more details about the monthly plan, please refer to what is a monthly plan?