As you might expect from the title, Lv 2 kara Cheat datta Motoyuusha Kouho no Mattari Isekai Life is for the most part a comedy… although it also has quite a bit of romance (both regular romance and romantic comedy). I would say it’s something like a cross between Shin no Nakama and Tensura without any of the drama.
Two main things stand out. The first is that the protagonist has been summoned from a similar fantasy world rather than Earth (so there’s no culture bulldozing or tech saviorism), and the second is that the central romance is a monogamous relationship established almost immediately (with whiplash-inducing speed). So then what about all the various side characters? The series does quite a bit of matchmaking resulting in a wide variety of different relationships.
Which brings us to two red flags: The rather frequent comedic sexualization of an adolescent dragongirl, and the way demon and half-demon children apparently age in dog years.