ココロ・ボタン
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Niina Kasuga, an ordinary high school girl, feels unwell on her first day and is helped by Eito Koga, a cool and slightly aloof classmate. Smitten, she confesses her feelings, and he agrees to an “trial” relationship, revealing his playful, teasing side. As Niina navigates Eito’s unpredictable charm, their bond deepens amidst everyday school life. (Unreviewed summary by Grok 2)
Volumes
| Cover | Vocabulary List | Total | Unique | Used Once | New ⓘ | Density ⓘ | |
|---|---|---|---|---|---|---|---|
| Series | 6,617 | 2,146 | 1,255 | 58% | 8.79 | ||
 |
ココロ・ボタン １ | 1,627 | 764 | 483 | 63% | 764 | 8.72 |
 |
ココロ・ボタン ２ | 1,773 | 927 | 631 | 68% | 627 | 9.34 |
 |
ココロ・ボタン ３ | 1,721 | 867 | 574 | 66% | 443 | 9.31 |
 |
ココロ・ボタン ４ | 1,496 | 760 | 533 | 70% | 312 | 7.79 |