Oh, please, please! <3 Even a drabble/short story will do! KyoAni could have made them bitter rivals or have some bad blood between them because of Rei, arguably, replacing Rin's place on Team Iwatobi + that trio, but instead they put the past behind them and Rei sacrificed his own spot to allow Rin the chance to swim a relay with his three friends again..

And then Rin taking Rei under his wing (BUTTERFLIES BUDDIES) and helping him with the other swimming strokes, awh my heart ( ；ω ； )