Short for スピリチュアル系.

being a follower of New Age spirituality

(slang, derogatory) A vague, derogatory label applied to stories that have overdone, clichéd elements. Usually an isekai story with elements like those described at 異世界#Usage notes.

(economics) hyperinflation

short sleeper

rice cooker

Kyūjitai form of 楽器 (“musical instrument”)

(mechanical device) shock absorber

a respiratory organ

A gentleman is no specialist. That is, unlike a tool fashioned for a specific purpose, a gentleman is well-rounded, someone who has talents suited to any task.