Resized to 17% of original (view original)
Artist's commentary
Eris-chan from Mushoku Tensei♪
Eris: "Is my chest getting bigger?"
Rudeus: (That's because I massage them every night while you sleep. Hue hue hue.)
Naked version is uploaded to FANBOX♡
https://me1vlp9r.fanbox.cc/posts/2185243