宿借り, 宿借: a hermit crab

角川: a surname

独自: independent / 独自: unique

独自: being original / 独自: uniqueness

sound of heartbeat

throbbingly, such as with a throbbing heart

(onomatopoeia, often as どかんと) with force or vigor, producing a loud sound; with a bang or thump / (onomatopoeia, often as どかんと) with force or vigor, in great amounts

蒴藋: Chinese elder

夷則: ninth note of the shí-èr-lǜ; seventh month of the lunar calendar

子息: (honorific) son / 四足: four-footed / 四則: the four basic arithmetic operations / 四塞: / 紙燭, 脂燭: / 視束: optic tract