Vocabulary consisting only from characters you are able to read
分の
bunno
denominator bun no numerator (in writing common fractions), X Yth's (Y bun no X)jlpt3, math
引きこもり
hikikomori
(1)a shut-in, a stay-at-home, people who withdraw from society (e.g. retire to the country), (2)social withdrawal, shunning other people mix