KiTTY & PuTTY & japanese

i used kitty as my default terminal in vista environment. but kitty doesn’t support transparency mode in vista, and putty itself doesn’t support japanese or korean.. i was very surprised, there’s a patch for japanese character and multi-byte characters. why putty doesn’t adopt it?

i delete kitty and install the patched version of putty. now japanese character is displayed well.

putty’s way of ssh auth is somewhat absurd. they use their own format of key and to generate ppk(putty private key), we have to get a private key of ssh2, not public key. why do we need private key when we just want to connect the server? is it ok? i don’t know at all..