As Tsuna' got a clear view of the girl, he had discovered it was actually Haru Miura. She was one of the people he saw in the memories he received from the ???. From the memories he got, he knew that Haru was one of his closest companions and was one of the earliest people he met after reborn. In the memories, Tsuna saw that Haru was the first girl who actually liked him romantically.
Although Tsuna already had Kyoko as a girlfriend due to his memories, it influenced Tsuna's personality. It made him more open to any situations, arrogant, wiser, lustful, and scheming. As a result, Tsuna was more open to the idea of a harem, but Tsuna thought this was a bit too early to think about this as he didn't know if she would still like him this time as his world seems to be not exactly like the one from his memories but similar. But as Tsuna, though this Haru was pleased.
Haru Pov
As Haru was walking home from Namimori high, she was a bit sad as In her class, she was always ignored and unlike as people thought of her as annoying and was too optimistic.
Also, most of the people in her class, especially the males in his class, didn't like her as one time one of the most influential male students of the class confessed to her, but she rejected him as she didn't like him. Due to this, the guy became angry and started to spread rumors about her, which resulted in her classmates ignoring her.
She also had thoughts of transferring to Midori Junior High as it was closer to her house and was also an all-female school. As she thought of this, a bunch of thugs came to her and cornered her, then said: " Well miss what you are doing here all alone at night, wanna come with us instead and have fun with us." As one of the thugs said lewdly, Haru felt scared as she became scared of what this thug will do to her, but suddenly a voice came out of nowhere and said:
" Hey you, I thought I said don't ever come back here again." Haru found this voice to sound like a prince saving a princess in distress. As Haru always liked stories where a prince saves the girl, and she dreamed of meeting her own prince one day that will save her. Through this, she saw that the thugs ran away suddenly as the boy that seemed to be the same age as she came in front of her and then asked him if she was okay.
As Haru heard this, she felt her heartbeat faster as she saw the boy who looked cute and handsome with a relatively good build. She felt a strong attraction to the boy and immediately said with an infatuated voice," Ah, yes, I'm ok. My Name is Haru Miura, an 8th-grade student of Namimori High; thank you for saving me." As Haru said happily.
Tsuna Pov
As Tsuna saw how Haru reacted to him, he felt that Haru seemed to be exactly liked by his memories. As he figured that the reason Haru from his memories liked him was that he saved Haru when she fell from the bridge, and it turned out that now Haru liked him again as now he saved her when the thugs were harassing her.
As Tsuna thought this, he chatted a bit with Haru for a bit, and he wondered by Haru was from Namimori high and not Midori high as he asked her. She replied that she is currently studying in Namimori high but was talking with her parents if she will transfer to Midori High. As Tsuna,
though this is explained why has, Haru always had time to go to Namimori high even if she was on another school as she was originally living closer to Namimori high. After Haru and Tsuna talked a bit, Tsuna and Haru exchanged numbers and decided to meet each other as Tsuna thought what would happen since he and Kyoko are already dating what would happen with his relationship with Haru and the others.
Timeskip Next morning
Today was the weekend, and Tsuna had a date with Kyoko later in the afternoon. Still, Tsuna decided to meet Takeshi today as he saw in his memories. Takeshi had great talent in swordsmanship, and Tsuna wanted to meet him to test his sword skill as even if he tried to practice it himself with the basic techniques in the forest. Still, he had not had any significant progress.
Although Tsuna's main weapon is gloves, Tsuna decided to learn at least average skill on all weapons he knows how to use, so if he ever doesn't have his gloves, he can have a backup weapon to use in a fight. As Tsuna said goodbye to Nana, she teased Tsuna a bit about Kyoko. He had already introduced Kyoko to Nana, and she really liked Kyoko and approved of their relationship. He had also already met Ryohei Sasagawa, although he was too obsessed with doing things 'to the extreme' as his motto says that he was a good guy overall.
When Kyoko introduced Tsuna to her family, and Ryohei challenged Tsuna in a fight to prove if he was worthy of Kyoko, even if Ryohei already knew about Tsuna, At first, Kyoko complained that they shouldn't fight. Still, Tsuna and Ryohei convinced Kyoko that it was just a friendly match, and they wouldn't go too far.
But as the spar ended, Ryohei lost by a landslide as Tsuna had more type of Martial arts to use that Ryohei and had mastered most of them to at least an average level, and using various techniques; he managed to beat Ryohei.
After the match, Ryohei continually invited Tsuna to join the Boxing club. Tsuna always refused until Ryohei finally surrendered after a month of requesting but still asked Tsuna to come once in a while sparring.
As Tsuna learned more about Ryohei, they hanged out more, and since then, Tsuna and Ryohei became closest friends and almost treated each other as brothers. Kyoko's parents also saw how happy Kyoko was with Tsuna and how close he was with Ryohei.
Hence, they approved of their relationship but said they should properly take care of Kyoko with a scary aura. Although Tsuna was stronger than Kyoko's parents, he was still a bit shaken by their gaze and decided parents are indeed scary even if how much stronger than you are as Tsuna thought of this and had a bit of a chuckle. As He Finally went to Takesushi to meet Takeshi Yamamoto, his Future candidate Rain guardian of His Vongola Family.