i love when people take batman too seriously and act like he’s the epitome of cool, the most serious and wise character, but in reality he has the personality of a teenage girl going through an emo phase
My headcannon on Shisui's eyes: if just seeing your best friend die was enough, there would be more Uchiha with the Mangekyou, especially during the Clan Wars. Maybe Shisui was on a mission with his team that went catastrophically wrong and his best friend was horribly maimed beyond the point of saving and could either die slowly in agony or be offered a mercy kill. Imagine her asking HIM for the mercy kill. He's relentlessly cheerful for Naruto's reasons: he Can't Let Himself Think About It.