When Seigi learns that his college classmate Tanimoto Shoko is going to a marriage meeting, Seigi is disheartened.
Seigi has some feelings for the gemstone-loving Shoko.
All he has left in his possession is a teardrop-shaped loose aquamarine he purchased from Richard that he intended to give to her.
Unable to say anything to Shoko, the discouraged Seigi returns to Etranger, where Richard gently encourages him by telling him to live without regrets.
However, behind his words is a part of Richard's past unknown to Seigi...
Among beryls, there are 
aquamarines containing iron,
بين البيريل، ثمّة الزّبرجد
،الّذي يحتوي على الحديد
Unter den Beryllen gibt es
Aquamarine mit Eisenanteil,
Entre los berilos,
las aguamarinas contienen hierro,
Entre los berilos,
las aguamarinas contienen hierro,
Parmi les béryls, il y a
des aigues-marines contenant du fer,
Tra i berilli, ci sono le acquemarine che contengono ferro,
Entre berilos, há água-marinhas
contendo ferro,
Среди бериллов есть аквамарин,
который содержит железо,