Boueki-shou no Otoko "The Swordsman, The Merchant, Yukimasa Aida"
About
Age: 25
Birthday: 12 September
From year: 1707
Passed away at the age of twenty-five. In life, the Merchant worked on an international trade ship. While he could be somewhat standoffish, he loved Pauline dearly, and though they were often worlds apart, his devotion to her never wavered. So how will their relationship change when faced with the ultimate barrier: death?
He is the beast, referred to as Bestia, in the year 1707. His real name is Yukimasa Aida.
(source: Official Website, Visual Novel Database)