Galapago-I came to an uninhabited island due to group metastases, survive with beautiful girls and smartphone mystery app ~ (Volume 1-2)

the publisher:
Author: Kazuki Yasaka, Ayano, that
Size: 128mm x 182mm
Number of books: 2
Language: Japanese
Category: Youth manga, manga
Latest publication date: 2023-01-06

Synopsis:
A plain high school student, Todo Daichi and his high school students suddenly move to a mysterious uninhabited island that is not on the map.
On the island, plants and animals are all unknown.
And everyone's smartphone had a mysterious app that can be purchased from food, weapons and bases.
The earth, which was at a loss, encountered four beautiful girls at the highest school caste and cooperated to survive.
Unprecedented survival x harem life start!