Once Upon a Witch’s Death

"You're gonna die in a year."
On the day of her 17th birthday, apprentice witch Meg Raspberry is told by her mentor Faust, the Eternal Witch and one of the Seven Sages who stand at the top of the magic world, that she has only one year to live.
Meg has been afflicted with the curse Death Sentence
There is only one way to escape it. She must create the Seed of Life, a miraculous item said to grant immortality to whoever holds it. The ingredient needed to produce it is fragments of emotion, specifically the joyful tears shed when someone feels true happiness.
"How many tears do I need to collect?"
"A thousand people's worth."
"What...?"
And so Meg begins to meet all kinds of people in order to gather joyful tears.
Her childhood friend and closest companion, Fine.
Inori, the Wise Witch, another member of the Seven Sages like Faust.
Sophie, the Witch of Blessings, a prodigy Meg's own age who also holds a seat among the Seven Sages.
This is the miraculous tale of Meg Raspberry, an inexperienced witch who has been told she has only one year left to live.