We see this clearly in his reasoning to stay with Chihiro. He's doing it to prove himself as valuable and to make the world safer for other people. He lets people talk about him like he's a useful tool for Chihiro to use against the Hishaku. Hakuri won't do anything for his own sake, only others'

So the storehouse tools are still relevant. Hakuri won't be able to heal and progress until he confronts the pain he's keeping inside. He needs to get rid of them so he can start to value himself and not put Chihiro's plans in jeopardy. So he can finally let himself be loved without conditions.