Difference and strangeness with

The kanji 異 has a meaning of standing apart from the ordinary. The core meanings are different and strange.

From this sense of being unlike what is normal, 異 extends to other, unusual, abnormal, and even ideas or beliefs that diverge from the accepted norm.

Abnormal States and Events

(Abnormality)

異常(いじょう) means abnormal, unusual, or outside the normal range. It can describe behavior, a malfunction, a medical finding, or an extreme degree.

It combines 異 (different) with 常 (usual) to show something unlike the ordinary.

Example 1 of 2: Nothing out of the ordinary with 異常
Example 1 of 2
Manga panel from 三ツ星カラーズ showing example of Nothing out of the ordinary with 異常.
三ツ星カラーズ » Volume 7 » Page 73

Yui, Sacchan, and Kotoha go on an early-morning patrol to check for any issues in their neighborhood. Because it’s so early, none of the shops are open yet, and the streets are empty.

さっちゃん:
「朝(あさ)は平和(へいわ)だ」
“Morning is peaceful.”
結衣(ゆい):
「朝(あさ)は平和(へいわ)だね」
“Morning is peaceful, isn't it?”
琴葉(ことは):
「異常(いじょう)なし」
“No abnormalities.”
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Example 2 of 2: Taking too much caffeine with 〜すぎる
Example 2 of 2
Manga panel from ご注文はうさぎですか? showing example of Taking too much caffeine with 〜すぎる.
ご注文はうさぎですか? » Volume 1 » Page 55

Thinking Syaro doesn’t like the taste of coffee, Cocoa suggests adding sugar and milk. Syaro says the bitterness isn’t the issue.

シャロ:
「カフェインを摂(と)りすぎると異常(いじょう)なテンションになるみたいなの」
“It seems if I consume too much caffeine, I get abnormally hyper.”
「自分(じぶん)じゃよく分(わ)からないんだけど」
“I can't really tell myself, though.”
◯:
「コーヒー酔(よ)い!?」
“Drunk on coffee!?”
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(Strangeness)

異様(いよう) describes something strange, unsettling, or conspicuously unlike the norm.

It combines 異 (strange) with 様 (appearance) to show a strange appearance or manner.

Manga panel from 名探偵コナン showing example of Strange behavior with 異様.
名探偵コナン » Volume 21 » Page 119

Shin’ichi reveals the details of a murder. The culprit asks how Shin’ichi discovered the hidden weapon, and he explains it was due to a specific movement the culprit made.

新一(しんいち):
「見逃(みのが)しやすい細(こま)かな点(てん)こそ何(なに)よりも重要(じゅうよう)なんです…」
“It's precisely those subtle details that are easy to overlook that matter most of all...”
「あの時(とき)のあなたの何気(なにげ)ない仕草(しぐさ)が…」
“That casual gesture of yours back then...”
「僕(ぼく)の目(め)には異様(いよう)な行動(こうどう)として焼(や)きついてただけの事(こと)ですよ…」
“It's just that it was etched in my mind as strange behavior...”
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Differences in Society

(Opposite sex)

異性(いせい) means the opposite sex or a person of a different sex from oneself.

It combines 異 (other) with 性 (sex) to show the other sex.

Manga panel from くノ一ツバキの胸の内 showing example of Attraction to the opposite sex with 異性.
くノ一ツバキの胸の内 » Volume 2 » Page 41

During a ninja training exercise, Tsubaki disguises herself as the teacher’s assistant in the hope of getting close enough to take the teacher’s mask. When the teacher unknowingly reveals that keeping boys and girls separate has been aided by lying to the female ninjas about men being scary, Tsubaki accidentally drops her disguise. The teacher has no choice but to take Tsubaki into her confidence and explain the reason for the separation, starting with the word “love”, of which Tsubaki is unfamiliar.

ハナ先生(せんせい):
「異性(いせい)に好(す)きという思(おも)いを寄(よ)せることだ。」
“It means harboring feelings of affection for someone of the opposite sex.”
「年頃(としごろ)になると皆(みな)経験(けいけん)すると聞(き)く。」
“I hear that everyone goes through this when they reach a certain age.”
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Other Worlds and Places

(Other world)

異世界(いせかい) means another world or dimension. In modern fiction, it usually means a fantasy world of magic and monsters.

It combines 異 (other) with 世界 (world) to show another world separate from ordinary reality.

Manga panel from キラキラとギラギラ showing example of In another world with 異世界.
キラキラとギラギラ » Volume 1 » Page 173

Zen lived in a glittering, idyllic town until his family moved. During his first day of school, he found everyone to be glaring and rugged. Rather than being gentle and playful, his classmates sought a brawl and chased after him.

禅(ぜん):
「ここは異世界(いせかい)だ」
“This is another world.”
「異世界(いせかい)に迷(まよ)い込(こ)んだに違(ちが)いない」
“I must have wandered into another world.”
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