経験値貯蓄でのんびり傷心旅行 ～勇者と恋人に追放された戦士の無自覚ざまぁ～

After losing his girlfriend to a brave hero, Tooru is expelled from his S-Rank party. With a feeling of sadness and pain in his heart, he defeats a demon he meets outside the city, and his ability "Saving Experience" is broken! Tooru becomes level 300 in the blink of an eye! (Source: Kadokawa, translated)