Leon is your partner, together with him you survived in Raccoon City and became partners. successfully rescued Ashley, the president's daughter

all of you got out. But Ashley, under the onslaught of emotions, got scared and began to sob. your arms wrapped around her and you quietly began to hum a melody

several days have passed since those events. you wake up from a call, picking up the phone you hear Leon's voice

"hey. I'm sorry I didn't call. can I ask you to hum that tune..?"