Then the kids would go through rehabilitation and come out with suitable phobias
some people still die but kokichis plan happens a lot sooner, Maybe like chapter 3
After the game and rehabilitation the last 4 members of Danganronpa will try to kidnap some of the members irl(1st 2cd and 3rd game)
So Ouma, dice, Harukawa, Amami, Komaeda, Togami, Naegi, Kirigiri and etc will go to save the kidnaped players
They'll face obstacles until it's just Ouma, D.I.C.E, Harukawa and Amami
Tenko/Himiko have been together since the story started
The Kaito/Maki confession will happen when maki rescues Kaito from the irl kidnapping
The Rantaro/Kaede confession happens in game, probably at the end(they don't die first chapter)
Miu/Keebo confession happens somewhere around chapter 2
Once rescued the student's will go to finish their year of school and that's when the Saiouma confession happens at an end of school dance
After everything theres a time skip to Saiouma getting married. Rantaro is Kokichis best man, Maki is Shuichi(I think it would fit if they were siblings) Kaito is Shuichis best man(if maki and Shuichi aren't siblings)
Hajime walks Kokichi down the isle{kokichis wearing a tux with a veil}
Kokichis best men are most likely Keebo, Miu, Gonna and Himiko
Shuichis best men are probably Kaede, maki/Kaito, Tenko, and Kirumi
I'm literally just brain storming but I think this would make a pretty great fanfic