Brothers conflict: Ema's brother

one day, while Ema was hanging out with her brothers in the living room, her phone suddenly dinged, letting her know that she had a notification, when she checked, her face instantly darkened upon the date.
that day was a very hard day for the Hinata family, dating the day of an accident that happened years ago, when Ema was still a child, and dating the day her little brother Luka was put into a coma after getting in a severe car accident.
Ema nor Rintarou told the Brothers about Luka, but Miwa knew, so none of the brothers knew what was going on when Ema began to act strangely, making an excuse to leave the house to secretly go visit Luka who was in the hospital.
but a surprised came to both the Asahina and Hinata family that day when Luka Hinata suddenly awoke from his sleep.
what does the world hold in store for Luka? read to find out.