"I see... and along with with these other few, then, it seemed to be the one that had worked the best.." he carefully claimed the vial and seeked out padding he kept at all times available in his satchel, perusing the tiny inscriptions. "Some things are simply noy available here, or... at least not in this village. I can see the reluctance people had in making this, but..." he claimed a deep breath and nodded. "I will give it my best."

"I got an idea!" Sasuke piped up. "You say some stuff isn't available in this village, but what if others have it?" he all but threw himself off the bed, biting into his thumb as he went, summoning his trusty crow as he landed. "Maybe he can go look!"
"..a messenger? People may be wary of its form. These are scavengers, after --ow!"
"Don't say bad things about him, or he'll yank your hair. Don't even think bad things!" Sasuke pouted and gave a light whistle, the crow landing upon his head and settling there, although still glaring.
"He's not sorry, Renji-san. You should apologize first, else he's not even going to deliver anything you'll even write."

After an apology and some planning, Renji wrote to ask if the village closer to them had any of what he seeked, or anything that could replicate its intended effect.
"It's going to work for sure! You'll see, nissan!" that was true teamwork.