This is all he is likely to get. It is not a satisfactory answer, but sometimes good enough is the highest bar achievable. Siebren knows this; it does not stop him from being severely irritated at the fact.

He moves towards Senku, making absolute certain his placement interrupts Senku's view of the wall, before holding the SCA out for Senku to take. He waits for Senku to take hold of it before speaking, holding on to it for a few more brief moments. "I have lost too many people to senseless violence. I will not lose you to foolishness and arrogance." The anger has dropped from his tone; the intensity has not.

Only then does he release the SCA into Senku's custody.