付つき物もの

1. 1natural accompaniment ; inseparable pair ; something that naturally goes with (another thing)
2. 2inevitable aspect (of something) ; part and parcel ; something that unavoidably comes with (another thing)
3. 3supplementary printed insert (in a book or magazine) ; appendix ; book cover ; obi strip

Other writings and readings

JMdict entry 1495730. Source and licence.