[It's simple enough to connect the dots here. Kaito pokes the flowers of the plant, thoughtful, and takes just one petal. Well he sure isn't falling asleep right now, so looks like the flower doesn't affect him or Merlin!]

I know demons sleep but it's not a coincidence. You really were right with the sleeping scent thing!

[Demons can snooze randomly! While he was at the power plant, the big ooze there fell asleep in matter of minutes for no reason...and also it's late at night...but still, what Merlin said about magical sleep because of the scent makes him mull the possibility the plant had something to do with this.

There's no harm in trying to consider the possibility they fell asleep because of the plant instead of any other reason, he's sure!]

This could be useful! If we can plant a few more of these, we'd have plenty so we all can get away from, you know, trouble. Demon trouble!

[People died in that forest trying to get to this town. Sleep-causing plants like these could save everyone's hide!]