Any dramas that fit these scenarios?

Hi~ does anyone have any recs that fit these scenarios/tropes? Bonus if they fit and are from less famous/obviously recommended dramas, don’t care about their country of origin, genre, or year of release.  

I: Same aged (or very similarly in age) friends fall in love and retain an element of friendship in their romantic relationship. At least one of them is immature and finally becomes an adult through the realization that they’re in love with the other (like an ‘aha’ moment). Dramas that fit exactly: Reply 1997, Delightful Girl Choon Hyang, Meteor Garden 2001

II: Couple share a really intense, immersive love with lots of physical chemistry & a satisfying resolution in the end (happy ending preferred). The intensity of love & specific immersive atmosphere are rly the main points here, like the kind of melodramatic dramas of the early 2000s. Dramas that fit, some without the happy ending: Autumn Concerto, Mars, Tree of Heaven, Autumn in my Heart

 Marine:

Same aged (or very similarly in age) friends fall in love and retain an element of friendship in their romantic relationship. At least one of them is immature

Reply 1988  sooo grat drama, best "Reply" part

Thirty But Seventeen 

It's Okay to Not Be Okay not so sure, especially about immature (though they are very different soft ML and crazy, really crazy and amazing FL) and friendly, at list in the beginning wasn't sweet relationship, not even in childhood... but drama, characters, chemistry and everything is really high class! +it had  good physical chemistry/intime, 

 Dream High immature - yes, very sweet very in love boy and more mature, not so nice girl (same age) - yes, but not childhood friends, though we watch quite some time of their life and it feels like they started as very young people and become adults, also there isn't romance I mean we don't see them while being as couple

My Father is Strange youngest sister and his sweet boy

Seisei Suruhodo, Aishiteru - aren't childhood friends, aren't friends at all, but girl is much immature than boy (with his hidden sexuality) fits second scenario too, it has maybe more intime scens then 99,9% of Asian dramas.

 Marine:

Couple share a really intense, immersive love with lots of physical chemistry & a satisfying resolution in the end (happy ending preferred). The intensity of love & specific immersive atmosphere are rly the main points here

One Million Stars Falling from the Sky and it's korean version - The Smile Has Left Your Eyes both are very very good and with real strong sexy chemistry

Nine: Nine Times Time Travel not sooo many physical, but you feel mature relationship, where sex isn't taboo, also intense plot and good drama.

I Need Romance 3 in the beginning not so special, usual romance, but then it become more and more interesting and many not usual moments, very good chemistry, good interesting relationships (multiple), amazing ML and good physical chemistry in second part of drama

Search: WWW not just romance focused but FL has very hot romance with hot younger guy

Bang Ja Chronicles  very sexy short drama

Love Affairs in the Afternoon 

Perfect and Casual not so physical but still very sexy vibe, also kind of fits first scenario (immature) too.

Before We Get Married 

Something in the Rain 100% fit

The World That They Live In 

Bromance maybe overall not so physical vibe but one of most sexy scene

When A Man's in Love second part has goodsexy scenes

Mistress wouldn't say good romances or chemistry, more hook ups, but very open sex scenes, not usual for Asian dramas

Coffee & Vanilla very sexy jdrama

 Marine:

kind of melodramatic dramas of the early 2000s. Dramas that fit, some without the happy ending: Autumn Concerto, Mars, Tree of Heaven

I separated this part, because these dramas have that feel (I like that old melodrama feel, more taboo free atmosphere must say than modern romances) but maybe doesn't have physical skinship 

A Love to Kill - same feel like tree of heaven  (very strong chemistry and love) but for my taste it's better, TOH had very annoying FL who was crying in every scene. revenge, love/hate relationship

Lucifer it doesn't even have romance tag but was amazing chemistry and feel of love, plus very interesting plot and if you are into anti hero kind characters (mostly SML) and good masterpiece revenges you will love it

That Winter, The Wind Blows very good chemistry because ML is acting amazingly 

Girls' Generation 1979 SFL's love story. also FL's story could go to first scenario

Giant one of best romance (SML-FL) also physical but was one scene only

A Man's Story that one and Giant has kind of similar romance story, if you like when SML is equally main as ML and he is anti hero, not so "good guy" but girl loves him anyway, which is one of my favorite scenario, you will love these dramas. if you don't love bad guys you should give Giant chance anyway, he isn't bad overall, I would say he is better then main protogonist, everything pulls him to be villain but he tries not to cross lines anyway. plus he loves FL sooooo much, it's really great romance (now I'm talking about Gaint)