The series sucks ass, on the level of rent a girlfriend.
I won’t spoil in case you ever consider to watching a season two which two years out looks as unlikely now as it did then.
The manga is over 200 chapters and the end of this anime was about chapter 56. The brother question isn’t answered until chapter 134. Questions like Hiro’s fiancé are never answered.
New characters are introduced for more drama like a childhood friend for the MC you see in the photo album for the Dad’s birthday with zero real chance of winning.
The feelings might get some development but relationships go nowhere even if they change they revert to zero.
You’ll have massive revelations on the lines of confessions only to start the next chapter and seem them ever addressed. The whole “I love you please go out with me” thing is said only to be followed with “JK” multiple times by multiple characters.
There is the slightest bit of hope that this series is coming to an end as the characters are 18 and close to the age where you can legally get married thus ending the story right? But people were saying that a year ago and people were saying that two years ago.
Do not continue with this is not worth your time. Your reactions are amazing and I loved watching them, but for your own sake, it’s not a story worth getting invested in. It’s one step forward two steps back. Everything which should be significant isn’t.