energy conservation
heartslogos
there is only this (3)
The Apothecary Diaries: Volume 6
Natsu Hyuuga
The Apothecary Diaries (6)
Fearless: Wrath of an Empire
Bomul
The Lost Hero
Rick Riordan
The Heroes of Olympus (1)
A Familiar Face
daoguang_yongheng (cyclohexanol)
the p in impact stands for platonic (6)