Hitai ni MikazukiCinta Puteri Bulan Sabit; Hitai ni Mikaduki; ลุ้นรักหนุ่มนินจา (Thai); ひたいに三日月; 恋爱印记

From ShoujoLove: Ten years ago, Yutaka followed Azusa but ended up falling from a tree. Because of that, she has a moon shaped scar on her forehead. Then the two separated, but when he came back, he was a shinobi!?