"Your days are ruined."
The overdue return to one's hometown.
The death of a father.
It was an ordinary life.
Until...

Become a young man who experiences the end of normalcy as life takes an unusual turn.
A young girl. A battle. Death. Undying.
Supernatural weaponry. A secret organisation.
Become a protector, a mentor, a murderer... a king.
The bizarre two-day world.

[from DLsite English]