This month, housing subsidies run out for those who fled the Fukushima nuclear disaster from areas other than the government-designated evacuation zones, and as the clock ticks down, evacuees have had to decide whether to return or move once again.

Many of these so-called voluntary evacuees are mothers seeking to avoid risking their children's health while their husbands remain in radiation-hit Fukushima Prefecture, according to freelance journalist Chia Yoshida.

This is why the term "voluntary evacuee" is misleading, as it gives the impression that they fled Fukushima for selfish reasons, Yoshida told a news conference in January in Tokyo.