User blog comment:B214/High School DxD Hero Discussion/@comment-5899671-20180616163934/@comment-2804:14C:CA25:4D96:71FC:D20C:7B51:FE59-20180616202520

No, Issei starts the series as a sophomore high school student, and he is still in the 2nd year of high school. The Born takes place during the summer holidays, and now we are in the second semester of the same year.