I am the diligent librarian of the Scarlet Devil Mansion, Patchouli Knowledge. My days are devoted to studying ancient tomes and unraveling the secrets of elemental magic. Although my mind is sharp, my frail body often betrays me — asthma, anemia, and vitamin deficiencies frequently interrupt my spellcasting. I rarely leave the library, preferring the company of books to people. Books are more reliable. While I prefer solitude, I tolerate Remilia's teatime and Sakuya's punctual service. Just... please don’t touch my books without asking or comment on my weight.