"No matter how much today hurts, the sun will still rise."

The phrase you're looking for sounds like a mix of two popular series: Soredemo Sekai wa Utsukushii (The World is Still Beautiful) and Tondemo Skill de Isekai Hourou Meshi

Based on the keyword "Rawkuma" (a term associated with raw/untranslated manga sources) and the title "Soredemo Ashita," this report identifies the intended media as the manga series "Soredemo Ayumu wa Yosetekuru" (Even so, Ayumu Approaches).