The translator's note on the bowl makes this funnier. For Marisa, a traditional home meal would be mushrooms and mystery meat, and I'm pretty sure Mima would encourage criminal acts.
Can cockroaches become youkai if they survive for a hundred years?
For most youkai types, especially just generic types. 100 years tends to be the minimum go to years to become a youkai. Coins, leftover garbage, statues, Even a tree that was beloved by a village (or around a lot of magic) can all turn into Youkai.
Don't know the romaji for the Shiseimon characters. Their names are ่ผ้พ็ฅๆก่ฏ, ๅคฉ็ งๆฑ็ทๆ, ็ฝ้่้, ๆฐด็ๆดๅคขใ ็ก, ็พ้ขใใใซ, ็จฒ่ทๅฎๆ, and ใฌใดใฃใขใปใขใดใทใซใผใ, and the image files on an archive are named Ouka, Hinoa, Kohaku, Mumumu, Heteka, Hougetsu, and Levia.
