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Daru
Daru is a black cat who lives with his owner, Satoru Fujinuma. He is a very loyal and loving cat, and he always seems to be there for Satoru when he needs him most. Daru is also very intelligent, and he often helps Satoru solve problems. One day, Satoru is given the ability to travel back in time. He uses this ability to save people's lives, and he also tries to prevent his own death. Daru is always there to support Satoru, and he helps him through some very difficult times.