Yooyu's Magical Adult Store Ch4: Page 21-22 (Patreon)

Yooyu's Magical Item Catalog:

001: The Two-Timing Incense

Light the Incense and it will remember the time it was first lit. Once the incense burns out or was put off, time rewinds back to when it was first lit. Only those who smelled the incense remembers the time that has been rewinded.