Sloth Series

The Sloth Series is one of the seven sins and also the Curse Series obtained by Kizuna after being captured by Miyaji and the vanguards of the waves.

Overview
After Kizuna was kidnapped by multiple vanguards of the waves, she was petrified into stone and had an accessory attached to her. When she was rescued and de-petrified, she had the Rod of Sloth equipped along with the accessory. Due to the curse of the Sloth Series and accessory, Kizuna was extremely lethargic and even found breathing difficult. She also started emitting cursed smoke when people tried to help her which transmits the feeling of lethargy to those affected. When she tried to change her weapon form, the accessory prevented it and thus let the cursed effects to continue to grow.

After finding a potion which repelled illegitimate powers, they let some be absorbed onto the cursed weapon. The accessory falls off but the curse remained. However, since the curse was growing, Kizuna was unwilling to change weapon forms. To help motivate Kizuna overcome the curse, Naofumi and the others set up a fishing rig. With her fishing obsession and Sadeena and Shildina pretending to be powerful fish, Kizuna becomes motivated enough to overcome her curse and switch away from the Rod of Sloth.

The typical side-effects of the Rod of Sloth in Glass' World is just a reduction in levels and power-ups for temporary power. However, under some circumstances, the side effects of using the Rod of Sloth is a growing and contagious feeling of complete lethargy.

Trivia

 * It is unknown when Kizuna originally unlocked the Sloth Series however Glass was familiar with it.