Mutsuki Watanabe

Minato is a young girl who was traumatized at a young age by being abandoned by her parents and left with her senile grandmother. She frequently corresponds with a pen-pal named Night, a boy about the same age as her that she's never actually seen in person. Although Minato and Night are very different - Minato is upbeat while Night is brooding, they get along anyway and she regularly updates him on the happenings in her daily life. Minato is even willing to confide in Night that she's falling in love with a boy she's recently met named Sho.

Mika is a fresh high school student who starts texting a mysterious boy. She is shocked when he reveals who he is - Hiro, a delinquent attending her school. What she doesn't know is that Hiro isn't as bad as he seems.

World Wat II broke out shortly after diplomat Chiune Sugihara was assigned to Lithuania. Nazi Germany occupied the western half of Poland and began persecuting the Jews. Lithuania was then annexed by the Soviet Union, and the Japanese consulate was ordered to close. Meanwhile, Jewish refugees who had fled Poland flocked to the Japanese consulate, requesting the issuance of Japanese transit visas. Chiune repeatedly sent telegrams to the Ministry of Foreign Affairs requesting permission to issue visas to the Jewish refugees, but received a final notice that the visas could not be issued. However, with only a month left until the departure deadline, Chiune decided to defy the Ministry of Foreign Affairs' orders and issued visas to the Jewish refugees...

Aimi and her father move into an old, apartment building and learn quickly that things are not as they seem.