NTR hater triggers multiple heroine

This is a story of a teenage male lead who hates NTR to his core, he is not good at talking with others especially girls. Those he does talk to are his otaku friends.

That is until a mysterious app that appears on his phone that allows him to put a stop to NTR. The only problem is all the women who he saves are now falling in love with him.

One thing I really appreciate is the lead isn't brain dead and notices when girls are hitting on him and actually is able to come to the right conclusion.