(Internet slang) (one) outside of a Twitter user's mutual follower group

natural disaster

域外: offshore; overseas; outside (of a country or region) / 生き甲斐, 生甲斐, 生きがい: reason for living; purpose in life

developmental disability

collateral damage

fantastic, bizarre, incredible

electronics market (retail area known for specializing in electronics)

persecutory delusion

(mathematics) geometrical

"Historical kana usage", a prescriptive method of using kana to write Japanese. Devised in the Edo period by Keichū (契沖) and taught in schools until 1946, it aims to be etymologically faithful and reflects earlier stages of the language (Heian period and earlier).