I feel very relieved and pleased that you think that! The last thing that I would want to do would be to endanger your level of comfort!

[He says with a sigh of relief, his cheeks stained by dried tears. And then, he replies to her with honesty.]

I admit that a first name basis feels unusual to me. But, I would not say that I feel bad. Especially if it makes you feel happy! Your happiness is easily one of my highest priorities, Sayaka-kun!