Root Double: Before Crime*After Days - √Before  

Root√Double: Before Crime*After Days - Root Before, ルートダブル Before Crime＊After Days √Before

In the year 2030, a nuclear reactor meltdown takes place at LABO, a massive research facility. This unfortunate event traps nine individuals - three rescuers and six ordinary people - within its confines. The only hope for these trapped souls is that help will arrive in nine hours when the system recovers. However, there's a catch: they only have access to "magic potions" that can protect against radiation for just six of them.