Alt. title: 恋愛プリズム | 恋爱三棱镜 | Love Prism (Maruya Kae) | Ren'ai Prism | Ren'ai Purizumu.
From Paradise Love Scanlations:
Hiroto Kahara can see the auras of people from childhood and has learned to hide his gift so his life would not be affected. Kahara knows all that concealed on a person’s aura color and its unique tranquility and quiet are the pure colors of children Kitagara discovered when he meets a prism of colors you want to decipher.
– chapter 1