Or he should have made a complete harem route first and finish this game then make the individual routes. Which all and most harem games does. Harem routes take less time cause they are literally choose a girl in your harem. (No making random routes and paths). After finishing the game with a canon ending, he can make individual routes clearly and quite easily since he have to focus on one girl. I particularly never understood why new developers start their first game with multiple routes (which is literally reject/bang this girl choices with well predictable consequences. Yeah my gf will break up with me when she finds out I fucked her best friend) Not only does it takes more time to finish the game but also increase the workload for the dev. NGL, this game was more fun and cool to play till all the harem/individual routes bs started since people were only playing for fun with decent story and sex scenes.
Yeah, that's the usual scenario, Dev starts creating his game, then he gets swarmed with demands to make it a harem, cause some people are too lazy/busy to replay few routes lol.
And evetually game turns into absolutely boring fuckfest, where the girls have no will and no soul, they all just jump MC without any questions like "wow, hey, why are you sleeping with other girls"..?
And who said that harem route here is a canon one? I don't remember Dev saying it, how can it be a canon if the game wasn't supposed to be a harem in the 1st place?