Evaporator water drain line replacement

I need to replace evaporator water drain line or fix it since most of the exterior part coming out of the car on the bottom has been chewed up most likely by mice or something while car was parked at storage for a month.

I am not seeing any way to fix the rubber tube unless someone has some great idea. there has quarter size holes all over, but one of them is right where the tube enters the car area. Like right at the end.

Found the part number:
80271-SWA-A00

Need help with getting it removed and installing new one. Not sure what to take apart for this job. I am assuming most is going to be from the inside of the car. Could not find any video or guides to do this.