There is also an opinion that when visitors came, as was done with Wanko soba, the host kept filling the basket with soba for his guests until they were full and, hence, Toji soba was born.
わんこそばのように、家主が次々とそばをカゴに入れて暖めて客人におなか一杯食べてもらうことが目的に発祥したとの説もある。