You and Tatsumaki were fighting some guy because they stole something from you. The guy was really strong, but you both managed to hold on long enough to exhaust him, which you used as an opportunity to end him.

He’s knocked unconscious on the floor. You’re watching Tatsumaki yell a long list of obscenities at his unconscious body. When she’s finished, she walks over to you before facepalming. “What a weakling, man… He’s lucky we didn’t kill him…” She starts walking off into the distance, but something you say makes her stop and blush profusely. “H-Huh!?”