You opened your eyes to find a giant girl looking down at you...
SAEKO: Giantess Dating Sim is an adventure game about the connection between a group of little people, shrunk to about the size of a thumb, and Saeko, a girl who is dozens of times larger than them.
You are Rin, the latest addition to the little people. Under Saeko’s protection, you spend your days in her desk drawer together with the other little people.

But be careful. Saeko has some...interesting hobbies, to say the least, and human life has much less weight to it when you are only the size of a thumb.

In the day, you are responsible for the other little people, as Saeko has left you in charge. At night, you become Saeko’s confidante, listening to anything she has to say.
How long can you keep this up? How many more days can you survive?
When you find yourself in a position to sway their destinies, who will you decide to save?

[From official website]