When the Third Wheel Strikes Back

I was transported into the romantic fantasy novel my younger sister was reading, not as the male lead but as the second male lead. If I remember correctly, this punk is fated to go into war in the future and die in the male lead’s place. Okay, I’ve made up my mind. Let’s not go anywhere near the main characters and stay healthy until I can go home. --- **Original Novel:** [Chapters](https://ridibooks.com/books/425193499), [Volumes](https://ridibooks.com/books/425233591) **Original Webtoon:** [Naver Series](https://series.naver.com/comic/detail.series?productNo=9174594), [Naver Webtoon](https://comic.naver.com/webtoon/list?titleId=803518)