Webthere is a secret hidden in the swordsmith village that tanjiro plans on seeking out to make himself stronger; Here's what he's looking for. Webnot only is she incredibly flirty when she meets up with tanjiro, but she also tells him a valuable secret:

In the first episode of the ongoing season, the love hashira tells tanjiro that there’s a hidden weapon in the village that he needs to find. While hunting the weapon, tanjiro. Webafter tanjiro declares that he will be sure to defeat muzan, mitsuri happily hints about a 'secret weapon' hidden in the village that could make him stronger. The next day, tanjiro searches through the forest looking for hotaru and ponders about the secret weapon. Webnot if the kakushi came from the swordsmith village to pickup tanjiro and thus only knew how to get back, not where they were going. Webhowever, it turns out the village is in grave danger as two upper rank demons are sent by muzan to destroy it to cripple the demon slayer corps. Now, tanjiro, nezuko, and their new allies in this fight band together to stop the demons and protect the village.

Webnot if the kakushi came from the swordsmith village to pickup tanjiro and thus only knew how to get back, not where they were going. Webhowever, it turns out the village is in grave danger as two upper rank demons are sent by muzan to destroy it to cripple the demon slayer corps. Now, tanjiro, nezuko, and their new allies in this fight band together to stop the demons and protect the village. Webafter learning that haganezuka is refusing to reforge his sword, tanjiro is told he can travel to the swordsmith village for help. However, tanjiro can't just go straight to swordsmith village alone because the path to the village is a secret.