Sexy Cartoonist Big Sister × Many Parallel Time and Space Ains
Fall in love and save the world.
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Demining: The male protagonist has no highlights.
Second person, but the heroine has a first and last name.
Each time and space has its own setting.
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About "you":
Because you have experienced an endless journey, you appear to be good, and you can still be a well-known [crossed out] sexy [crossed out] popular cartoonist, but your mental state is actually a bit crazy.
Purpose: Save the world