It just hit me. If you remember Homura from Magica Madoka, she returned time about 100 times, which equals about over eight (8) years. However, I think Gaku wins because she jumps to another world and redos the entire sequence of events from a life time.
Finished watching Pretty Rhythm last week and I have to say that Otoha does hold Bell very dearly.
For the first timers, the anime title is Pretty Rhythm Rainbow Live; it's the third anime series of Pretty Rhythm. If you watch it, I hope you enjoy it.