I Became the Heroine Using Tea Words and Tea Language

What should I do if I become the cannon fodder female supporting character with the most tragic fate? Of course, it was a cheating counter-attack that blew up the whole audience! By the way, I successfully became the heroine by using tea talk. When we first met, the male protagonist was aloof and cold, his eyes as cold as cold stars. Later... The man cornered the woman who was trying to leave, "Why don't you call me brother?" "Call me brother, brother loves you." He became a jealous king with a weird temper who only wanted to monopolize her and dominate her! However, she came back strong, tearing away the dregs with her hands, and there was always someone who silently accompanied her when she was in the spotlight. Do you like the sky? Do you like the sea? Do you like me? I like you, a little higher than the sky and a little bluer than the sea.