Mitsuyoshi Nakamura
Retired, 58
I used to take that metro line every day to work. After the attack, I thought, "I could have been one of those victims." I feel very sorry, but the attack could not have been prevented, because horrible people exist everywhere, in our society and elsewhere. Afterward, people changed the way they lived their lives because they couldn't forget what happened. For example, they started avoiding crowded places out of fear of what might happen.