Must be nice for you, Koishi. Your name is pretty uncommon.

Is it?

Well then you should just change your name to something else, Kokoro-chan.

How about "Koishi'sgirlfriend"?

Pleased to meet you, Hata no Koishi'sgirlfriend-chan!

Don't be silly

Examples of other Kokoros: -Kokoro Tsurumaki from Band Dream! -Kokoro Yotsuba from Kamisama Minarai -Kokoro from Dead or Alive -Kokoro from Kokoro Toshokan -Kokoro Kusunoki from Kuromajo-san ga Tooru!! and so on