Stars have Scars too

☆ﾟ.*visuals*･｡☆

This is Chiaki Hinata and his soulmate Koharu Aoki. They're Hinata's bestfriends. The two cousins have the same amount of hyper energy, and put Koharu through quite a trial before she blended in too and began having fun with them. She is a pretty good gamer so she gets along with Kenma.

This is Tobio's best friend Zen Miura and Mei Suzuki. Zen was born with a silver spoon in his mouth. But due to his family's gentle and right upbringing he's charismatic and empathetic. After Hinata, Zen is Tobio's best friend. The two always tease each other, pretending to be a couple and fooling others. Mei doesn't mind, she knows how much they mean to each other. Mei and Zen met each other in their third year when Zen transferred to Karasuno from Nekoma. He is a passionate guitarist and singer.

This is Kumi Sato and Hana Sato.

Kumi is Mei's cousin and fiercely protective of both her cousin and her younger sister Hana. She and Chiaki are childhood besties and after he accidentally spilled the beans about Kageyama's past, she's been protective of him too, holding Kindaichi, Kunimi, Iwaizumi and Oikawa with contempt and hate. Her mother had been part of a polybond but the others rejected her after she gave birth to Kumi, so she might also have been reminded of her mother when she saw Kageyama.