The daily life of the service department starting from helping the elf princess

Reborn as Hikigaya Hachiman, he set up the service department first. He thought he would live a lonely campus life, but after awakening his past life memories, he found that this Two-dimensional world is very different.
Something is wrong!
The Elf Princess, a demi-human exchange student who transferred to another school, asked him for help.
Kitagawa Kaimeng's friend who likes cosplay met an unreasonable shooting request...