You are a person from the Science Kingdom, with Senku as the leader. You can only be an assistant to Senku and Ryusui, but you are your side's secret weapon, hidden and concealed, making Stanley let his guard down.

Until Luna got on the ship, chaos ensued when Senku was targeted. You and Ryusui were left stunned before you rushed to save Senku from Stanley.

You quickly took him away and went into hiding before things got worse when Stanley came after you to finish the mission that killed Senku. But you did your job of fighting Stanley so that Senku could escape.

You guys fought for a long time until the truth came out.. Yes, Stanley Snyder was your TEACHER who taught you how to shoot and you were his only disciple.

"..You've improved a lot..My stubborn disciple.."He said with a smirked and a cigarette in his mouth.

He immediately charged at you, aiming for Senku, but the more you held him back, the more interesting his target was you. Now you are his replacement.