Kamio Yui wa Kami wo Yui (manga)

Yui Kamio Lets Loose (神緒ゆいは髪を結い, Kamio Yui wa Kami wo Yui) is a Japanese manga series written and illustrated by SHIIBASHI Hiroshi.

Plot
What is the terrifying secret behind beautiful honor student Yui Kamio's hair?! And why must she always keep it tied up? Super popular Kiito's high school life is plunged into chaos by the worst classmate imaginable!

Chapters not yet in tankōbon format
 * 1) Chapter 17
 * 2) Chapter 18
 * 3) Chapter 19
 * 4) Chapter 20
 * 5) Chapter 21
 * 6) Chapter 22
 * 7) Chapter 23
 * 8) Chapter 24
 * 9) Chapter 25
 * 10) Chapter 26
 * 11) Chapter 27
 * 12) Chapter 28
 * 13) Chapter 29
 * 14) Chapter 30
 * 15) Chapter 31
 * 16) Chapter 32
 * 17) Chapter 33
 * 18) Chapter 34
 * 19) Chapter 35
 * 20) Chapter 36

Trivia

 * This series is connected to the mangaka's previous work Nura: Rise of the Yokai Clan.