The game's heroine is the one most interested in Hiro, and unlike the other heroines, she doesn't have a "background" tying her, so she usually tries to get alongside him.
- When choosing the dormitories, Elf and Sister girls want Hiro to join their dormitories, however, he was planning on the third one, and the Heroine Sakura followed up at him. You can see from her personaliy that she is quite forceful, a more masculine trait, but that's likely why she is the protagonist of the Yuri game.
After literally dying... And "reviving", he learns of the sad endings of the heroines, one of them, the elf girl, is goig to have a polítical marriage, she had brushed it off because of Hiiro, but she became depressed, dropped school, and gave up on everything. Hiiro, not accepting that she would be forced to marry some random guy, used his new powers to rescue her in a movie-esque rescue scene, with her being so happy that he is alive. Soon after he finds out that she was going to marry a girl, and he regretted saving her.
Then we have the official fiancées.
- One of the initial "enemies" he faces is one of the older sisters of the dormitory head, she literally tries to kill him, later, they fight against a Devil and both of them fall to her attack. They are transported into a fake world where they are supposed to be happy, but Hiro, knowing how to defeat the devil, makes a plan, but she doesn't believe they can win, and many days pass like that, she falls in love with him, and wishes to stay in the fake world. He fights and then she joins him, defeating the Devil, and with that, they would lose their memories of this time, so nothing would change... But Hiiro has a Guardian Angel with him, who makes a deal, and she does not lose her memories. Starting from that day, she becomes extremely supportive of him, and since Hiiro properly lost the memories, he finds it pretty scary.
- Later he defeats a super assassin on a level similar (but inferior) to Astemil, he is able to make the dorm leader, who was deemed useless, to be capable of fighting, and defeats the family with the two sisters. The mother is extremely happy and gives her two daughters to him. The super assassin became his older sister, and she is super protective, cuddly, pampering and any stereotype of onee-chan that you can imagine.
- He goes back in time, takes the body of a dead ancestor of him, not knowing his own name, he just uses his own name, and helps the ancestor of the Margelline family (grandaunt of Ophilia), she helps her, and said grandmother falls in love with him. However, the original person was dead, and Hiro is from the future, it was a love that could not be, she never remarried, but her actions built the present, to the point that the family is important. Back to the present, they defeat the devil, and the matriarch of the Margeline family has 3 marriage documents, for the 3 daughters (older sister is super dramatic, but Hiro relied on her during his period of time in the past (just after saving Snow), Ophilia herself, and the younger sister who is a Magical Girl (Magical Girls are incredibly strong girls, it's said that 3 magical girls can defeat a Devil [An entity that CANNOT be defated normally]).
- Among the devil followers that Hiiro inherited, one of them, a former classmate small time villain, likes him and is very tsundere.
- The Devil within him has sometimes been able to use his body, mainly when he goes unconscious for some reason (like after a fight), and she acts in ways that he deosn't know, and she won't tell him if she did anything. Later for example, we find out she essentially seduced some girls, and the girls are pretty much super fans of Hiiro, who started a religion with the devil as his Guardian Angel (they don't know she is a devil).