Japanese people live in abject fear of terrorism outside Japan. There have been a few attacks in southeast Asia against venues that Japanese frequent and, owning that the country is extremely safe, it has been completely blown out of proportion.

I have a Japanese friend that has been road-tripping Europe for some time in his vacations and has been unable to convince any (Japanese) friend to go with him. In the last one, he was almost coming with a guy, but at the last moment, that guys mother convinced him to cancel the trip, and this was before the Paris attacks.