Koori no Jouheki

Name: Koori no Jouheki
Rating: 7.7

The Ramparts of Ice
氷の城壁

Manga7.7405 votes14 volumes · 117 chaptersFinished

ComedyRomanceSchool

to add this manga to your library.

About this title

Synopsis

Inept at dealing with people, Koyuki Hikawa maintains a wall between herself and others. She spends her time in high school away from others, all alone. At least until she encounters Minato Amamiya who keeps closing the distance between them for some reason. The aloof Koyuki, the popular Miki, the boundary-less Minato, and the easygoing and kind basketball team member Youta. This is the story of these somewhat complicated four and their tantalizing, bumbling youth. (Source: LINE Digital Frontier, translated)

Publication notes

Koori no Jouheki began as a web comic submitted to XOY Challenge in 2017, which later turned into LINE Manga Indies. Official serialization began on LINE Manga on January 10, 2020, on Manga Mee on July 31, 2020, and on piccoma on April 31, 2021.

Published

Jan 10, 2020 to Apr 29, 2022

Authors

Agasawa, Koucha

External links

MyAnimeList page Official Site Official Site @ramparts_ice Wikipedia

MAL rank: #2004
Members (MAL): 2,577
Favorites (MAL): 23

Related titles

Adaptation

Koori no Jouheki (anime)

Main characters

Koyuki Hikawa18 fan favorites
External profile
Koyuki Hikawa is a reserved, introspective high school student marked by her constant self-doubt and tendency to overthink every interaction. Haunted by past relationships and the weight of her own expectations, she often erects emotional walls—rejecting others before giving them a chance to truly understand her. Over time, she yearns to break free from her self-imposed isolation and embrace a more genuine, open connection with those around her. Her journey is one of learning to trust both herself and the kindness of others, even when vulnerability seems daunting.
Minato Amamiya8 fan favorites
External profile
Minato Amamiya is a high school student whose calm, analytical demeanor hides a tumult of inner emotions. All throughout his life, he learned to rely on his logic and introspection, often overanalyzing his feelings even as he shows quiet compassion toward his friends. Though his exterior appears composed and reliable, Minato grapples with the complexities of young love and the pressure to balance his rational mind with genuine emotional expression. As he navigates everyday challenges at school and within his social circle, Minato's subtle determination and reflective nature slowly reveal a depth that promises significant personal growth.
Miki Azumi1 fan favorites
External profile
Miki Azumi is an outgoing and vibrant high school student whose caring and bold personality sets her apart. Known for her unfiltered honesty and creative flair, Miki has weathered a series of turbulent relationships that have taught her both the joy and the sting of unrestrained passion. While her direct manner can sometimes come off as abrasive, Miki's genuine care for her friends and her determination to live authentically make her a dynamic force within her close-knit circle.
Youta Hino1 fan favorites
External profile
Youta Hino is the cheerful heart of his friend group. He's a high school student whose laid-back attitude and unwavering optimism provide a refreshing counterpoint to the more troubled souls around him. Despite coming from a family with its own set of complexities, Youta remains remarkably supportive and empathetic. His easygoing nature and sincere willingness to help others make him a natural mediator, even when he's too busy simply enjoying the present moment. Youta's simple outlook on life often belies a subtle inner strength, and his warm presence brings light and stability to his peers, even as he navigates his own quiet challenges.