Inkya datta Ore no Seishun Revenge: Tenshi Sugiru Ano Ko to Ayumu Re Life  

Following his collapse at his demanding job, Shinichirou Niihama begins his second year of high school with a newfound determination to start over. Despite the challenges he faced in his previous life, he remains optimistic about his future prospects. Meanwhile, Haruka Shijouin, whom he had met before, appears even more innocent and adorable than he remembers. As she stares directly at him, she exclaims, "You have changed so much since yesterday! You seem like such an adult, yet you still maintain your kindness!" If given the chance, Shinichirou would undoubtedly save Haruka from her tragic fate, which was caused by severe bullying. With his newfound maturity and corporate prowess, he intends to make the most of his second youth by helping her overcome her struggles.

Inkya datta Ore no Seishun Revenge: Tenshi Sugiru Ano Ko to Ayumu ReLife began as a web novel on Kakuyomu and Shousetsuka ni Narou under the title "Inkya na Jinsei wo Koukaishinagara Shinda Black Kigyou Kinmu no Ore (30) ga Koukou Jidai kara Yarinaoshi! Shachiku Chikara de Seishun Revenge shite Tenshi Sugiru Ano Ko ni Kondo koso Suki dato Tsugeru!" (陰キャな人生を後悔しながら死んだブラック企業勤務の俺（30）が高校時代からやり直し！社畜力で青春リベンジして天使すぎるあの娘に今度こそ好きだと告げる！) on December 12, 2020. Kadokawa has released a revised and illustrated version of the series since February 1, 2022 under its Kadokawa Sneaker Bunko label.