Table:
0
A
B
C
D
E
F
1
Year
Character
Title
Author
Artist
Imprint
2
2005
Dokuro Mitsukai
Bludgeoning Angel Dokuro-Chan
Masaki Okayu
Torishimo
Dengeki Bunko
3
2006
Kino
Kino's Journey
Keiichi Sigsawa
Kouhaku Kuroboshi
Dengeki Bunko
4
2007
Holo
Spice and Wolf
Isuna Hasekura
Jū Ayakura
Dengeki Bunko
5
2008
Haruhi Suzumiya
Haruhi Suzumiya series
Nagaru Tanigawa
Noizi Ito
Kadokawa Sneaker Bunko
6
2009
Tohko Amano
Book Girl series
Mizuki Nomura
Miho Takeoka
Famitsu Bunko
7
2010
Mikoto Misaka
Toaru Majutsu no Index
Kazuma Kamachi
Kiyotaka Haimura
Dengeki Bunko
8
2011
Mikoto Misaka
Toaru Majutsu no Index
Kazuma Kamachi
Kiyotaka Haimura
Dengeki Bunko
9
2012
Mikoto Misaka
Toaru Majutsu no Index
Kazuma Kamachi
Kiyotaka Haimura
Dengeki Bunko
10
2013
Mikoto Misaka
Toaru Majutsu no Index
Kazuma Kamachi
Kiyotaka Haimura
Dengeki Bunko

Questions and formulas:
Question: Who is the author of Bludgeoning Angel Dokuro-Chan?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="bludgeoning angel dokuro-chan"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,C2:C10="bludgeoning angel dokuro-chan"),4))
Level: medium