Chapter
Vol.5 Ch.19
- Vol.1 Ch.1 : Low Calibur
- Vol.1 Ch.2 : Small Fry
- Vol.1 Ch.3 : Vagrant Girl
- Vol.1 Ch.4 : The Family's Turnaround
- Vol.2 Ch.5 : The Witch's Holiday
- Vol.2 Ch.6 : Route to Infection
- Vol.2 Ch.7 : The Mermaid's whisper
- Vol.2 Ch.8 : A Secret
- Vol.2 Ch.8.5 : [Omake]
- Vol.3 Ch.9 : How to Put It On
- Vol.3 Ch.10 : Conclusion
- Vol.3 Ch.11 : The Witch's Weakness
- Vol.3 Ch.12 : The Girl in the Infirmary
- Vol.3 Ch.12.5 : [Omake]
- Vol.4 Ch.13 : Insecure Heart
- Vol.4 Ch.14 : Dark Clouds That Creep Up
- Vol.4 Ch.15 : True Memories
- Vol.4 Ch.16 : The Sea and Tears
- Vol.5 Ch.17 : A Start of a New Semester
- Vol.5 Ch.18 : Love Triangle
- Vol.5 Ch.19 : Anger
- Vol.5 Ch.20 : The Pierced Relationship
- Vol.6 Ch.21 : The Devil's Choice
- Vol.6 Ch.22 : Escape
- Vol.6 Ch.23 : The Strange Looking Sea
- Vol.6 Ch.24 : The Mermaid's Broken Heart
- Vol.6 Ch.28.5 : [Extra Chapter 1] Hekikai no AiON X Karin
- Vol.6 Ch.28.6 : [Special Chapter 2] A Story Long Before Seine Met Tatsuya
- Vol.7 Ch.25 : The Girl Doesn't Know Happiness
- Vol.7 Ch.26 : The Fated Day
- Vol.7 Ch.27 : Magician Simon Magus
- Vol.7 Ch.28 : Renewing Moods
- Vol.8 Ch.29 : Signs
- Vol.8 Ch.30 : Inside the Fog
- Vol.8 Ch.31 : 3000m Deep Sea
- Vol.8 Ch.32 : Runaway Mermaid
- Vol.9 Ch.33 : A Slighty Disappointing CHild
- Vol.9 Ch.34
- Vol.9 Ch.35
- Vol.9 Ch.36
- Vol.10 Ch.37 : A love that has already ended
- Vol.10 Ch.38 : Kiss of Vows
- Vol.10 Ch.39 : The Hate
- Vol.10 Ch.40 : I Don't Care If I Die
- Vol.10 Ch.41
- Vol.11 Ch.42 : The Simon Inside the Mermaid
- Vol.11 Ch.43 : I Want You to be Happy
- Ch.44 : : Aion From The Blue Sea
Chapter
Vol.5 Ch.19
- Vol.1 Ch.1 : Low Calibur
- Vol.1 Ch.2 : Small Fry
- Vol.1 Ch.3 : Vagrant Girl
- Vol.1 Ch.4 : The Family's Turnaround
- Vol.2 Ch.5 : The Witch's Holiday
- Vol.2 Ch.6 : Route to Infection
- Vol.2 Ch.7 : The Mermaid's whisper
- Vol.2 Ch.8 : A Secret
- Vol.2 Ch.8.5 : [Omake]
- Vol.3 Ch.9 : How to Put It On
- Vol.3 Ch.10 : Conclusion
- Vol.3 Ch.11 : The Witch's Weakness
- Vol.3 Ch.12 : The Girl in the Infirmary
- Vol.3 Ch.12.5 : [Omake]
- Vol.4 Ch.13 : Insecure Heart
- Vol.4 Ch.14 : Dark Clouds That Creep Up
- Vol.4 Ch.15 : True Memories
- Vol.4 Ch.16 : The Sea and Tears
- Vol.5 Ch.17 : A Start of a New Semester
- Vol.5 Ch.18 : Love Triangle
- Vol.5 Ch.19 : Anger
- Vol.5 Ch.20 : The Pierced Relationship
- Vol.6 Ch.21 : The Devil's Choice
- Vol.6 Ch.22 : Escape
- Vol.6 Ch.23 : The Strange Looking Sea
- Vol.6 Ch.24 : The Mermaid's Broken Heart
- Vol.6 Ch.28.5 : [Extra Chapter 1] Hekikai no AiON X Karin
- Vol.6 Ch.28.6 : [Special Chapter 2] A Story Long Before Seine Met Tatsuya
- Vol.7 Ch.25 : The Girl Doesn't Know Happiness
- Vol.7 Ch.26 : The Fated Day
- Vol.7 Ch.27 : Magician Simon Magus
- Vol.7 Ch.28 : Renewing Moods
- Vol.8 Ch.29 : Signs
- Vol.8 Ch.30 : Inside the Fog
- Vol.8 Ch.31 : 3000m Deep Sea
- Vol.8 Ch.32 : Runaway Mermaid
- Vol.9 Ch.33 : A Slighty Disappointing CHild
- Vol.9 Ch.34
- Vol.9 Ch.35
- Vol.9 Ch.36
- Vol.10 Ch.37 : A love that has already ended
- Vol.10 Ch.38 : Kiss of Vows
- Vol.10 Ch.39 : The Hate
- Vol.10 Ch.40 : I Don't Care If I Die
- Vol.10 Ch.41
- Vol.11 Ch.42 : The Simon Inside the Mermaid
- Vol.11 Ch.43 : I Want You to be Happy
- Ch.44 : : Aion From The Blue Sea
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