Haruto's character is really mindblowing. He's super closed off but has a high curiosity. If he meets someone with bad intentions, it's pretty dangerous since Haruto is also a bit naive.
A relationship getting serious in just 2 weeks seems unrealistic and kinda scary if it happened to me. But, despite that, the interactions between Izumi and Haruto are pretty entertaining. And yeah, even though they seem noisy, having neighbors like theirs in the apartment complex seems fun.
Ah, but even though I really like it and find it entertaining, I can't give it a higher rating than this.