antenatal education (i.e. doing things deemed beneficial to the development of a baby in utero, such as playing calming music, talking and reading stories to the foetus, and maintaining a general healthy and mindful mentality in the expectant mother)

sworn brothers

Rare spelling of 兄弟 (“siblings”, literally “elder brother and younger brother”).

enjoyment

to enjoy, to relish

assisting (especially a ruler in matters of governance)

to assist (especially a ruler in matters of governance)

Muslim

a traditional Japanese townhouse in Kyoto city

extremely thin sheet of wood / thin sheet about 25 centimeters thick on which scriptures were written, used in the end of Kamakura period