Probably, yes. Not only is't funny, it's a far better ending than what the anime actually had.
Clannad ~After Story~ 4komaNo way... Nagisa?!
Open your eyes...!
Nagisaaaaaa!!!Uuughh... Nagisa... I'll become unable to take care of Ushio due to the shock of losing you!!
Then five years later, with a trip to the countryside as a trigger, I'll begin living with Ushio, only to have her fall ill from the same sickness you have...
And then... And then...Is something the matter, Tomoya-kun?And then...Dango~ Dango~ Dango~