Well, in the game Fire Emblem: Three Houses, the 'fe3h lost items book of ghost stories' could potentially be found in various locations. If it's related to the main story, it could be in important buildings like the monastery. It might also be a reward for completing certain quests or side missions. Another possibility is that it could be obtained from specific non - player characters. For example, an old sage or a mysterious merchant might have it. However, without more specific information about the game's design, it's hard to say for certain.
I'm not sure where exactly you can find the 'fe3h lost items book of ghost stories'. It might be hidden in certain areas within the Fire Emblem: Three Houses game world. Maybe in libraries or secret rooms.
Finding the 'fe3h lost items book of ghost stories' in Fire Emblem: Three Houses could be a bit of a challenge. It could be tucked away in the personal quarters of a particular character. Some games have items hidden in the living spaces of characters, and this could be the case here. Or perhaps it's part of a special event that occurs during a certain time in the game, like a spooky in - game holiday. It could also be that it's only accessible after reaching a certain level or achieving a particular milestone in the game, such as mastering a certain skill or forging strong relationships with certain characters.