A Middle-Aged Man Who Returns From Another World Goes Back to When He Was 17 and Becomes Unbeatable

Isekai Kaeri no Arafo Ryman, 17-sai no Koro ni Modotte Musou suru, A Middle-Aged Man Who Returns From Another World Goes Back to When He Was 17 and Becomes Unbeatable, 異世界帰りのアラフォーリーマン、17歳の頃に戻って無双する