@MrGoose
The thing that I just want to stress is that I feel like the author believes "I'm going to rent you as my girlfriend every week" is actually a redemption moment. But it's not. Like everything, even virtue must be done in moderation. The level of bravery required from an old lady versus a soldier is different, and even in a soldier, too much bravery can lead to recklessness and being foolhardy. In the MC's case, he's trying to nobly self-sacrifice, but he has gone too far and we've merely gone from "selfish, cringeworthy asshole" to "obsessed, cringeworthy dude putting a girl on a pedestal."
The MC is STILL not seeing Chizuru as an actual, flesh-and-blood woman. He still doesn't know how to behave like a normal person around her. At first he treated her like a slut and prostitute. (while beating his meat to the thought of his ex-girlfriend sleeping with someone else) Now he's treating her like she's a pure, angelic being. Neither of those are who Chizuru is. She's just a normal girl who happens to be pretty, and in the real world a girl like that would never love anyone who treats her in either of those ways.
He's literally attempting to buy her affection with money and good deeds, rather than honesty, communication, shared interests, and so on. If the author shows us later that this still isn't redemption, I'll be really impressed, but based on Chizuru's reaction to his savior mentality she's happy that he's doing this. And sadly, that makes HER a very, very flawed individual.