Hi, I'm a Witch, and My Crush Wants Me to Make a Love Potion, Vol. 3 by Eiko Mutsuhana
The love potion may be complete, but Sir Harij still seems to have business with Rose! And to top it off, a mysterious Lady Lau shows up at Rose's hermitage out of the blue. Though not a customer, Rose is more than willing to lend an ear for her woes...