Saiteihen de Agaku Boku wa, Isekai de Kibou ni Deau ~Jibun Dake no Youna Isekai ni Ikeru You ni Natta node Level wo Agete Minna wa Mikaeshimasu~

also known as Struggling at the Bottom, I Find Hope in a Different World: Now That I Can Go to a Different World Like a Game, I Raise My Level and Look Back at Everyone / 最底辺であがく僕は、異世界で希望に出会う～自分だけゲームのような異世界に行けるようになったので、レベルを上げてみんなを見返します～