Basically I want a manga like "koi dano ai dano"where the guys is in love with girl like crazy. I really want the boy to fall first and also would like if he is possessive of her (like he may get jealous and all) and it would be great if there is a second male lead. But I don't want too much of adult content. I don't care much about the story line as long as there is no age gap. Sorry for the demands but if possible I would like this couple to not be a side one, like I want it to be. main.
Thank you
🙂 🙂 😀

Namaikizakari. the male lead falls in love first and he's possessive of the female lead and there's a second male lead/ love rival. there's no age gap but the female lead is a year older than the male lead. there's no adult content.

Thank you. WILL SURELY GIVE IT A TRY!!!😊😊😊😊😊😊😊 😀 🤨

Sundome sounds right up your alley:
https://en.wikipedia.org/wiki/Sundome