Blue Eyes of Time Travel

Once she traveled through time, she understood many things. His younger brother, who had lived by his side for more than ten years, suddenly learned his true identity one day. The man I met at school actually met after traveling through time? But he didn't know himself at all. A beggar who casually helped him in ancient times followed him back to modern times in order to repay his kindness? The grudges and grudges of a thousand years ago will be solved a thousand years later...