A magician youkai, resident librarian and instructor of the Scarlet Devil Mansion. She has mastery over the seven elements corresponding to Japanese weekday names - Sun, Moon, Fire, Metal, Wood, Water and Earth - earning her the nickname "One-Week Wizard", but her reclusive lifestyle (she's apparently not left her library in 100 years, which is interpreted in some doujins as signs of hikikomori behavior) has taken a toll on her health, limiting her powers by way of asthma and anemia. Due to her baggy clothing, her bust size is still left to debate.
Person: purple_hair, purple_eyes, long_hair, very_long_hair
Clothing: striped, pajamas, frills, frilled_sleeves, frilled dress
Accessories: mob_cap, hat, ribbon, red_ribbon, blue_ribbon, crescent_hair_ornament, crescent, bow, red_bow, blue_bow, hair_bow, hat_ribbon,
Other: breasts, book, Voile
- "Mukyuu", a nonsensical catchphrase attributed to her
- Voile, the (unofficial) name generally used in reference to the mansion's library, which Patchouli tends
- Catchouli, a disgustingly adorable chibi cat girl version created by Hazuki Ruu