The girl who appears in front of Mamoru, calling herself "Ai," is actually not a human, but an artificial life replicant from the planet Triton. The research ship Bija on the planet Triton asks Mamoru to "educate Ai, who has no common sense or personality, as an earthling." Mamoru struggles every day to live with Ai, who has the same personality as a baby. If she can't educate Ai, Mamoru will be taken away by Triton!! Includes a total of 4 works.