BY TOYOTAKA NAGATA STAFF WRITER
Seifu Kan lays out his handcrafted glass dip pens. He gets up at 4 a.m. and spends the rest of the day working inside his studio in Sakyo Ward, Kyoto. (Kazunori Takahashi)
KYOTO -- When Seifu Kan turned 90 two years ago, he celebrated with his family and close friends, who were expecting the Kyoto glassmaker to retire.