Explore Kukui's house

Well, surprisingly, for a house that's been the subject of many researchings of Pokemon moves, it's surprisingly intact. His living room and kitchen are still intact and clean. He even has a water tank filled with the rendezvous Pokemon Luvdisc and the coral Pokemon Corsola.

In the loft, which is Lillie's room, you see a makeshift sofa bed that Lillie would sleep through the night, as well as what you'd expect from a bedroom: a table, drawers full of clothes, and a bookcase. On the table is Lillie's diary, too bad she locked it up. And aww, there's even a little mattress for Nebby to sleep.

In the basement, it feels a little more like a laboratory. On one side is a kind of little gym complete with some weights and a punching bag, either for the professor himself or for the Pokemon. On another side is a kind of case displaying Pokeballs (probably containing the Pokemon he researches) as well as a computer setup where you talked with Kukui before coming to Alola. There is also another water tank that contains data about Luvdisc's moves.

There are some books in Kukui's library. You brushed them over and place them back on his library.