かな

かな is a casual, self-directed sentence-ending particle used to express wonder, doubt, or a gentle speculation about something. It’s commonly used when thinking to oneself or speaking in a soft, tentative way. It is informal and typically not used in formal writing or speeches. The nuance is closer to “I wonder…” or “I guess…” rather than making a firm assertion. It can be followed by a question mark in writing to emphasize the wonder, or lengthened with かなぁ for a softer, more dreamy tone.