Saikyou Kensei no Mahou Shugyou: Level 99 no Status wo Tamotta Mama Level 1 kara Yarinaosu

There are always 16 heroes. Amongst them the Darkness Hero, Shion, the strongest hero in history. Shion has only one thing he believes in, his party members. However, those girls he believed in cruelly betrayed him. Is there a way for Shion to overcome his deep pain and keep on living? (Source: MangaUP!)