 If you liked Dagashi Kashi |  ...then you might like Demi-chan wa Kataritai |
They don't really have anything similar in theme, plot or characters but they both have this comfy feel with occasional laughs If you liked Hotaru you will like Hikari and vice versa while Dagashi kashi is more about the jokes and wacky situations the characters find themselves in Demi is more about the relationships and how they grow during the wacky situations