NIDOME NO ISEKAI SHOUNEN DATTA KARE WA TOSHIUE KISHI NI NARI DEKIAI SHITEKURU
Other names: 二度目の異世界、少年だった彼は年上騎士になり溺愛してくる ; In My Second Life, He Was a Boy, but Now He's a Knight and Dotes on Me ; Nidome no Isekai Shounen Datta Kare wa Toshiue Kishi ni nari Dekiai Shitekuru