This is how the manga ends, by the way. Tomoko wakes up realizing she's 40 years old woman in a mental asylum, who was having delusions of how her life would have been if she had gone to the field trip in her second year of high school, instead of remaining at home playing otome games.
/j
And then, the new nurse enters the room.
It's Asuka.
Great way to start a fanfic