Chiba Kaoru's English name is Iris, which means rainbow, or it can also be Alice, the rainbow goddess in Greek mythology. Of course it can also be translated as a very tenacious flower - iris! The vitality of the iris is comparable to that of weeds, and its blooming beauty is comparable to that of peonies. Its words are: the happiness of faith. Chiba Kaoru is the most ordinary one among the vast number of time-travelers. She works hard to live, but she has an unusual boyfriend-Tezuka Kunimitsu! That's right, she is Dahyoyama Tezuka Kunimitsu's girlfriend! But this is also a last resort. Who told Tezuka's mother's fighting ability to be so... Uh, powerful... Whenever Tezuka's mother smiled and praised her son to the sky, Chiba Kaoru would always silently lament in her heart: "Good luck, Iris!"