He has enough time to write somethings down

Taking a moment to lean on a light pole, Keigo was frankly FREAKING OUT. Everything that Izumi just said makes no sense, but at the same time it makes a lot of things click into place. All of the times that Izumi disappeared and all the strange happenings around town added up right. Before he spiraled too far, he then thought, 'Wait, I have the Notebook I can do somethings about all of this!' Checking the time quick he thought with a look of determination, 'Okay I still have 20 minutes before I need to be there, let's do this!'

Pulling the Notebook and a pencil out he got to work.

Izumi Kurosaki will be able to defeat hollows without getting terribly hurt.
No Hollow will be able to sneak up on Izumi
Whenever Keigo witnesses Izumi fighting her kimono will be damaged exposing her to him.

Keigo felt pleased with that in keeping her safe, but then he had other more fun ideas come up.

All women age well with no wrinkles or gray hairs no matter their age and will always look like MILFs after age 40.
All women are subject to hentai jiggle physics, how much their tits and ass jiggles is subconscious and based on the situation.
Keigo can insert his dick all the way into any pussy and ass, causing great pleasure to every woman and they won't question it.
Women will always be impressed by Keigo's dick.

The changes Keigo made were to make life more interesting to look at and to prevent women from looking unpleasant after growing older. The others were made when he realized that he might not fit into ladies with his new dick. Keigo wanted to make sure he didn't hurt any women he wanted to fuck after all. He checked the time and he still had enough to make one more big change or rather make a scenario for the future.

Today while on patrol of the area around Chizuru's home, Izumi will see Keigo and Chizuru having sex. She will be unable to look away from it and always try to get a good view. Izumi will spend time rubbing her tits and fingering herself watching them. Keigo will be able to spot her doing this, Izumi will not notice. After 30 minutes Izumi will realize what she's doing and quickly move on. She will not be able to come during all of this.

Honestly the thought of this happening was really hot and he can make it happen. This would help make sure he could drag Izumi into the fold. With all that done Keigo sees he has enough time to get to Chizuru's place. 'It's time to get laid' He thinks to himself as he walks up to the door of a nice two-story house and inserts the spare key, unlocks, and enters the house.