Technically, this is a pairing fic (Tamaki/Haruhi) but the story focuses on Tamaki's friendship with all the former hosts rather than just his relationship with Haruhi. It is, as you may have guessed, based on Its A Wonderful Life and as such, does get very sad when you see the Host Club members fates had Tamaki not come to Ouran (the twins in particular). The only potential downside is that the author may or may not have intended for the identity of Tamaki's guardian angel to be a surprise; if she did, then she didn't really do a good job of it.
FanficRecs Comment by Marlee Cross
Technically, this is a pairing fic (Tamaki/Haruhi) but the story focuses on Tamaki's friendship with all the former hosts rather than just his relationship with Haruhi. It is, as you may have guessed, based on Its A Wonderful Life and as such, does get very sad when you see the Host Club members fates had Tamaki not come to Ouran (the twins in particular). The only potential downside is that the author may or may not have intended for the identity of Tamaki's guardian angel to be a surprise; if she did, then she didn't really do a good job of it.