Shikanoin Heizou is the greatest detective in Inazuma. So why is it that he was unable to figure out his soulmate was cheating on him with his childhood friend. Well, that was the case until he saw them and his friend having a go at it on the couch of the shared apartment. And that was the end of those relationships. Having his soulmate tattoo removed and dedicating his life to his detective work, Shikanoin Heizou would never love again. Or so he thought. Modern AU Soulmate AU Will have suggestive parts but nothing super explicit. Characters belong to Mihoyo except for made up ones to continue the plot.