Hatenkou Yuugi EP10 - A Present for You

Rahzel's father, who is actually the man that raised Rahzel after her biological father abandoned her, arrives and throws Rahzel a birthday party. He reveals an intent to bring Rahzel back home with him, though this does not sit well with Alzeid. The day Rahzel is leaving, Alzeid goes to buy her a birthday present, but instead gets some advice from the store owner, as well as meeting a man who tells him of his daughter, whom he abandoned several years ago, and whose birthday it is. The man also expresses his regret that he abandoned her; it is never stated directly, but is clear that this man in Rahzel's biological father. Alzeid rushes towards the train station and chases after the train. Rahzel sees him running and when she gets to the end of the train, Alzeid yells at her that he will not write her or even think of her if she deserts him now. Angered by this, Rahzel jumps off the train, and Alzeid explains that they can only remain comrades while they are traveling together. Finally, Rahzel gives in and decides to keep traveling with Alzeid and Baroqueheat.