Stories that made me feel that stinging sensation

Haru (omega) is in relationship with Eiji (alpha) who is also his childhood friend. But Eiji who is from elite family already had his fiancé and Haru always came in second. Renji (alpha), an older brother of Eiji and Haru's first love, appeared in front of him. "I came to pick you up" Renji told Haru.Where will this complicated love triangle lead to?

Natsuki's dad suddenly passed away by truck accident. In his overwhelming grieving & confused of loss, Natsuki confessed & forced himself onto his older childhood friend Yuni.