Doamaiger D S01 E01 Be at Peace! Sakura Mochi for a Stormy Heart!

Kyougoku Daijirou is the 15th generation owner of the Kyoto sweets shop Amashoudou. One day, Daijirou discovers a giant robot named Doamaiger D in his store's basement. At the same time, enemies called "Mekaijuu" appear in Kyoto and begin wreaking havoc.