DOCoSPADEo said: I really don't get it, could somebody please explain?
Okuu sniffed Satori's hair, Rin smelled Okuu and nuzzled Satori's head. Koishi felt Rin and Okuu's residual subconscious feeling and tackled her sister. Okuu walks in on a stressed Satori
Well it's 10 years but, seem like 1st Okuu peck Satori's hair. 2nd Orin senses Okuu's scent left on Satori, so her Cat instinct rub herself against Satori to mark her. 3rd Koish being Koish. In the end, Satori got 3 scent marks