The first time you speak to him a Yes/No dialog pops up:
You only get one free skill reset per character. Each additional reset costs MMDs and Luminance. Would you like to continue with your free skill reset?
You have 30 minutes to grab nearby attributes gems after agreeing.
After using the free reset, a different dialog is used:
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There is no level requirement to use this NPC the first time.
Lore & Dialog
If you do not respond, the dialog goes away after a few seconds:
Chafulumisa tells you, "Let me know if you change your mind."
If you speak while the 30 minutes timer is running:
Chafulumisa tells you, "You'd better hurry up, time is ticking."
If you speak to Chafulumisa again before timer is up:
Chafulumisa tells you, "You must wait to adjust your attributes again.""