uhm, i assume your explanation is the obvious reason any man would say. however, im curious of what were his intentions as the LN revealed if there were already. did he really contemplate deeply having kuro as his girlfriend? or was he thinking of something/someone else? or did he just want to experiment or experience feeling a girl's breast? was this erotic fantasy of his influenced by playing lewd things to 'little sisters'?
if he was thinking of 'little sisters' then of course it has a lot different meaning. 'little sisters' as the games. then what exactly is he thinking of having a girlfriend? an object of sexual release after testing virtual sex in some random eroge 2D gal?
and speaking of 'little sisters' of course, kirino comes to mind. that exactly are his feelings to kirino. i remember the siblings dialogue in chap1 part1. kyou seems to be hostile to some guy around kirino. no romantic undertones? if there is much thing, would he think of kuro having as a gf as repressed feelings for his sister or just an escape to release his manly urges?
if any of these is true, then kyou must be thinking too poorly of kuro. she being a provider of pure 'benefits' regardless-of-the-size-fuck-she's-still-a-girl.
or perhaps love? could true love spring forth from touching a girl's flat breasts?
i did ask about kuro breast. yes. was kyou really thought of giving pleasure to kuro or more for himself? i like to know what the LN says or at least, i'm willing to wait for it.
there must be a sort of explanation in his 'decline'/deviation of personality from his normal, peaceful, and boring self to a more daring and lascivious self. and what role are we expecting kuro to fulfill here.
then, regarding the breast size, is he really desperate that much to touch any willing woman without considering the size? that's why his intention is the key. well, in the end it must be just pure curiosity or primal instinct
but i believe there is still much more to be uncovered.