Welcome, Adventure Girl! is the 3rd episode of Pastel Yumi, the Magic Idol. It first aired on March 21st, 1986.
On a stormy night, Yumi's Grandpa Dankichi suddenly shows up at their home. He has hurt his back while adventuring, and has come to get Ichiro to agree to take over the family business. When Yumi finds out, she declares she will become an adventurer, just to help her grandpa!