Return

Once the girls started tearing up the bark using metal tools, making sure to not touch it at all, Alex also joined in and tore up some barks on his own.

"Wait, where are your tools?" Han Daiyu asked.

"Oh, I can touch this," Alex said. "I ate an immunity pill earlier that stops all poison from affecting my body. Didn't you see?" 

"Oh, okay," Han Daiyu said and continued. 

Finally, they managed to turn the tree naked by taking out the entire outer cover from its trunk.

Alex wanted to take more than just the bark, but given how rare this tree was for them, he decided to leave it be and let it grow and spread.

While the bark may not grow back, he hoped more willows could be found here instead.

'If only I had some botany knowledge,' Alex thought to himself. That was another thing that was to be added to the list of information he needed to learn.

The ship lowered from the sky and everyone got on it to leave the poison swamp.