改善 – Used in

Verb (する, transitive)

1. betterment; improvement

Usually written in kana

2. kaizen (Japanese business philosophy of continuous improvement)

oft. written カイゼン

	Used in	Used in %
Anime	123	(8%)
Live action	210	(16%)
Visual novels	281	(52%)
Novels	863	(44%)
Non-fiction	64	(44%)
Web novels	496	(47%)
Aozora Bunko	87	(15%)

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Aozora Bunko

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Meanings

Used in

Tensei shita Daiseijo wa, Seijo de Aru Koto wo Hitakakusu

Pure Girl

Kono Sekai ga Game da to Ore dake ga Shitteiru

Isshou Hatarakitakunai Ore ga Classmate no Daininki Idol ni Natsukaretara

Tensei Shoujo no Rirekisho

Murazukuri Game no NPC ga Namami no Ningen to shika Omoenai

Tensei-saki de Suterareta node, Mofumofu-tachi to Oryouri shimasu: Okazari Ouhi wa My Pace ni Saikyou desu

Sora wo Tobu, 3tsu no Houhou.

Kami no Ue no Mahoutsukai

Soukou Akki Muramasa

Hatena ☆ Illusion

超大国日本育成計画

農家の娘に転生したから大雑把に野菜を作る。

公爵令嬢は結婚したくない！

辺境伯になりました。～記憶は一部を喪失中ですが、冒険者スキルで頑張ります～

公爵夫人マリアンヌの、優雅ではない日常（マリアンヌシリーズ）

Hakuchuumu no Aojashin

NieR:Automata

【連載版】信じていた仲間達にダンジョン奥地で殺されかけたがギフト『無限ガチャ』でレベル９９９９の仲間達を手に入れて元パーティーメンバーと世界に復讐＆『ざまぁ！』します！

俺は全てを【パリイ】する 〜逆勘違いの世界最強は冒険者になりたい〜

転生して田舎でスローライフをおくりたい

Tokyo 24-ku

Good Doctor

Scramble Wizards

Cheat Majutsu de Unmei wo Nejifuseru

KiraPuri-ojisan to Youjo-senpai

Eikoku Kizoku no Shiteki Jikenbo

Kinrou Madoushi ga, Kawaii Yome to Kurashitara Hai, Shiawase Desu!

Kekkaishi e no Tensei

Bluesteel Blasphemer

Yome ni Shiro to Semaru Osananajimi no Tame ni XX Shitemita

Mouzen Philia

Amaemi -longing for you-

Kumo Desu ga, Nanika?

Touhakuden ~Maou Reijou Kara Hajimaru Sangokushi~

Anna Karenina

Ren'ai 0 Kilometer

審判

モンテーニュ随想録 06 随想録 第二巻

Kuro no Kiseki

Nattoku no Naitei wo Mezasu Shuushoku Katsudou 1 Satsume no Kyoukasho 2025

Ningen Fushin no Boukensha-tachi ga Sekai wo Sukuu you desu

Tensei Kizoku, Kantei Skill de Nariagaru: Jakushou Ryouchi wo Uketsuida node, Yuushuu na Jinzai wo Fuyashiteitara, Saikyou Ryouchi ni Natteta

Kamisu Reina Series

Hyouketsu Kyoukai no Eden

Silent Witch: Chinmoku no Majo no Kakushigoto

Suuji de Sukuu! Jakushou Kokka

Goshuushou-sama Ninomiya-kun

Tensei shitara Dainana Ouji Datta node, Kimama ni Majutsu wo Kiwamemasu

Eiyuu no Musume toshite Umarekawatta Eiyuu wa Futatabi Eiyuu wo Mezasu

俺は全てを【パリイ】する　〜逆勘違いの世界最強は冒険者になりたい〜

モンテーニュ随想録 06 随想録　第二巻