He is on direct collision course with mom, when she found out that he is the cause for her daughters sleep deprivation. Not ok man you had some wonderful years in front of you, but you got ahead of yourself.
True love is being able to both be in rivalry for the high score with one another but then to take care of your sleep-deprived partner and treating them to food afterword.
That's the entire point of relationships, to push both people into a direct where they reach the best person they can possibly be and reach new heights whilst overcoming flaws.
It's nice to wake up to a new chapter that starts with a high-level Shikimori pout.
Izumi is also surprisingly resilient to just pluck a branch out of his skull without comment. Doubt the "simp/wuss/beta/virgin" commenters could live two minutes with a toothache by comparison.