It sounds like you’re looking for the of the manga "Soredemo, Ashita" (それでも、明日) as found on Rawkuma (a site known for manga raws or translated chapters).
Here is the story outline for Soredemo, Ashita : soredemo ashita rawkuma
Would you like a more detailed chapter-by-chapter summary (if you specify how many chapters are out), or help finding where to read it in English? It sounds like you’re looking for the of
The story is highly regarded for its unique blend of ninjutsu and kung fu (Ninku), following a young warrior named Fūsuke. The story of Akira and the guitar spread
The story of Akira and the guitar spread far and wide, a reminder of the power of music to bring people together and transcend time and place. And if you ever find yourself in that small, seaside town, on a quiet evening when the tide is low, you might just hear the faint sound of a guitar, playing a melody that will leave you spellbound and yearning for more.
Fearing that their relationship will crumble under the weight of this sexual incompatibility, Mako makes a shocking proposal: . She introduces Kouhei to a married couple already experienced in the lifestyle, suggesting that by separating physical intimacy from their romantic bond, they might save their relationship. The manga follows Kouhei's internal conflict as he agrees to the arrangement despite his own reservations, exploring the "new door of immorality" and the emotional fallout that follows. Why Readers Search for it on Rawkuma