Second-year Kasaba University student Nakata Seigi rescues a foreigner being harassed by drunks. Wavy blond hair, blue eyes, and clear skin. The man who speaks unfaltering Japanese is Richard, a very competent jeweler with customers both domestic and international.
Thanked by Richard for being a "hero of justice," Seigi hires Richard to valuate a memento from his late grandmother, a pink sapphire ring. Through Richard, the mystery hidden in the ring is eventually revealed...
But this way, my grandmother will 
never be able to rest in peace.
.لكن هكذا، لن تستريح جدّتي في قبرها أبدًا
Aber so hätte meine Großmutter
niemals Ruhe finden können.
Pero entonces,
nunca podrá descansar en paz.
Pero entonces,
nunca podrá descansar en paz.
Mais dans ce cas,
son honneur ne sera jamais lavé.
Ma così mia nonna non potrà mai riposare in pace.
Mas assim, minha avó nunca vai
ser capaz de descansar em paz.
Только... так бабушка никогда
не упокоится с миром.