Sinopsis
Asahi and Maya didn’t always have the relationship they do now. Once, it was much different. A strange twist of fate makes Maya remember the old Asahi. Later, Asahi learns a shocking truth about Tanya and has to prove his mettle as an adventurer!.My One Hit Kill Sister Isekai One Turn Kill Neesan; Ane Douhan no Isekai Seikatsu Hajimemashita