Haven't been paying enough attention to the wiki to say anything atm.
Though I did see that js06 found that Railgun Volume 14 revealed that Kimi's full name in Japanese is 春暖嬉美.
js06 translated it as Shundan Kimi but it could equally be Haruno Kimi. As its too early to decide what the correct pronunciation is, let's leave it as Kimi for the time being.