Nightmare Fuel / Yotsuba&!

  • Yotsuba's creepy Slasher Smile face when targeting a sleeping Fuuka in Chapter 9 shows that children and (water) guns don't mix very well.
  • Chapter 85 captures the uncomfortable feeling of walking around in the dark as a child very well, as Yotsuba wakes up from her sleep and is visibly scared/worried as she looks around in the very dark and gloomy-looking house trying to look for her dad.
http://tvtropes.org/pmwiki/pmwiki.php/NightmareFuel/Yotsuba