The Cannon Fodder Side Character Goes on a Rampage in the Love Triangle

[Updates are irregular. Sorry!] You went to a secret realm to undergo a trial with your childhood sweetheart and fiance, your elder brother, your senior fellow apprentice, and the others. On the second day of the trial, you were captured. You and a group of slaves were locked in a cave under tight guard. On the third day of your captivity, someone tried to escape, was caught, and killed. You comforted the others, telling them your fiance would surely come rescue you all! On the fifteenth day of your captivity, the number of hostages had been cut in half, but you were still waiting to be rescued... On the thirtieth day of your captivity, your wait finally paid off: Your fiance, elder brother, senior fellow apprentice, and the others found the cave and successfully rescued you. Amid your joy, you realized they had all become completely infatuated with another woman. It turned out you were living in an otome novel, and your fiance, elder brother, senior fellow apprentice, and the others were all romance targets. During the thirty days you were imprisoned, the heroine had won them all over, one by one. Their feelings had grown as they went through all kinds of dramatic romantic entanglements, and she'd finally made it this far, completing a side quest to rescue the hostages along the way. Now you had two problems to face: 1. Your virtue was being questioned, and your fiance and the others were looking at you differently. 2. The rescue took too long, and your entire family was wiped out. Your brother was devastated, which gave the heroine an opportunity to win him over. * Reborn on the second day of your captivity, you carefully assessed the situation and spent the whole night thinking it over. On the third day of your captivity, you blew up the entire mountain. You took up your knife and slaughtered everyone who had imprisoned you. The main text is written in third person. Blurb finalized on April 19, 2021. Cover art thanks to Hua Zhongjin-A Tang. Theme: Face adversity head-on and stand on your own.