1 ending is cannon 4 and 5 are just for cucks

I would like to warn you, endings 4 and 5 are disheartening...
Follow ending 1 steps but make sure you turn on the NTR checkbox on the bottom right of the menu screen. It will ask you a new question upon skipping the intro part (give the delinquent the phone number), if you say yes, you will be in ending 4 and 5 territory.
ending 4 IMHO is the harder to get, you need to make sure you catch the ??? events (which are phone related events) on days 11, 14 and 17. It will then give you the option of "following her (to get ending4)", the other option would lead to ending 5.

nahhh bro end 4 and 5 is literally ntr 💀

just a correction for those who say ed 4 and 5 is straight up ntr.....nope its not, shes doing with other guys but all of them is literally the one who become burden for shawn, thats why she keep mentioned about "back to normal life" to shawn plus if you see clearly ed 4 and 5 is actually seperated from ed 3 which is she want to killed all of them except shawn, but because shawn stopped her the plot changes,instead of killing she lured 3 of them to make them as group who literally abduct shawn and acting she want to kill shawn to make shawn completely innocent and thus to keep 3 of them including minami into prison for a long time..she's literally doing all of that because knowing shawn having problem almost same as her except the parents part...and she dont want shawn end up in same scenario