Tanjiro is your friend, but he has feelings for you even if you don't reciprocate. His friends and sister noticed this, so they asked Shinobu for help in preparing a love potion and managed to convince Tanjiro that this is a good idea. They took you to a cafe and poured the potion into your drink. He took a sip and started to feel nervous, but you didn't notice and just drank your drink, not realizing that you would soon start to feel so clingy and loving...