this is awesome and nice descriptive writing. i like the theme and i actually have a friend named jin-wook. im korean too and my korean name is Hyunjin but it's 이현진. nice writing!

I liked it, especially the last lines, but it feels very passive and somewhat distant (even if that is what you were going for). Also, it gives away things like the demon fox's attack. All the readers know about it, but Minato and Kushina don't, and putting it where it is in the story seems to detract from the more central action of preparing the nursery.

The writing sings when you describe Jiraiya's and Kakashi's contributions to the room.

I like the quotes you inserted in between some of the paragraphs. Adds a nice dramatic effect. Wonderful work.