Short Stories

Short Stories is a side quest in Fallout 4.

Detailed walkthrough
You have to talk to Katy, and she will ask you to tell the children a story about the Commonwealth. You will need to wait for the next class to start (around 9AM) unless there is one already in session. When the class starts, you have to talk to Katy again and confirm that you're ready (if asked, Katy will say to stay away from overly-violent topics, but it does not seem to change the reward you receive). Instantly, one of the children will ask you if you've ever fought a deathclaw. From here, you can tell the straight truth about the deathclaw in Concord, say you fought it off with three shots from a pistol, or redirect the conversation elsewhere. At the end of the story, the children will thank you and you shall receive a Grognak the Barbarian comic.

Bugs

 * This quest will become stuck if you have failed the Hole in the Wall quest. On the PC, it can be forced to progress by using the console command "setstage 1338b9 200".
 * You will not be able to complete this quest if you tell Katy that your stories are too adult for the kids. You can reset the quest by typing "resetquest 1338b9" then "setstage 1338b9 100" into console. Then you should be able to talk to Katy and tell the story.
 * This quest will sometimes be stuck if you try to talk to Katy while she is sitting down. Type "resetquest 1338b9" followed by "setstage 1338b9 100" and you should be able to proceed with the quest.
 * It is also possible that the objectives will not show up and will not be marked as completed in your journal. To fix this load the save where the quest is not started yet. Type "setstage 001338b9 100" then "setstage 001338b9 200" and "setstage 001338b9 1000".
 * When finishing the quest, it will sometimes pause dialog when switching from Katy telling the kids to say "Thank you" and when the kids will say thank you. To fix this, move the mouse until you are not in the conversation and rejoin. It might not work at first.

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