Takashi Yanase
Each station on the Asa Line features a cartoon mascot character designed by Takashi Yanase, a local cartoonist from Kōchi Prefecture. The mascot for Shimoyama Station is a girl in a blue kimono with a white bird on her head. Her name is and is inspired by the children's song (Plovers on the Beach) written by local composer Ryūtarō Hirota. There is a monument to him at nearby Cape Oyama.