I'm looking for two manga I read a while back. First one I only read the first 3-4 chapters, but from what I remember, the mc is coming back to his old town and meets his childhood friend. The town had a rule where they need to stay indoors after dark since a monster comes out a night and roams the streets. In the second manga, the mc is a loner who gets stung by a insect and she gets infected/mutated into some kind of insect queen. Anyone she stings will become friendly with her. The infected are protective of the mc and are aggressive towards perceived enemies. She infected everyone at her school and created a mini country within Japan where everyone is kind when the government couldn't contain her.Then there's a second part of the manga with a new mc who gets nauseous when people are kind to her due to some past trauma. Anyone recommendations is apprectiated. ^_^

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I'm literally a rock.

The first manga is possibly this :
Kasouba no Nai Machi...

I also only read the first few chapters, but I kind of remember the premise going that way.

second one probably Himenospia