Doederleinia berycoides (fish)

赤毛: red hair

bloodworm, various worms of the family Eunicidae; often used as fishing bait or fish food / red velvet mite, harvest mite, various mites of the family Trombidiidae; (especially) Trombicula akamushi

basketball

A kagome lattice; an arrangement of laths composed of interlaced triangles such that each point where two laths cross has four neighboring points. Although called a lattice, it is more closely related to trihexagonal tiling than to a mathematical lattice.

a type of outdoor lantern for lighting shrines and temples

(Shinto, Buddhism, polite) a retirement for prayer to a kami or buddha

(Shinto, Buddhism, polite) to retire and pray

to seclude oneself / to be filled with... / to be stuffy, to be muffled

Alternative spelling of 引きこもり: hikikomori