Okay so I don't now how posting in this website works so I am sorry if posting the full images is "uncouth" or anything. Here's a small how to play guide made from my trial and error last night image by image
1st image - title
-Firstly press H key to unlock the tab up top (hover near where it is for it t pop up), its like a "Harem mode" of sorts
-text from the left is the title(with a six for june) and the names of the three girls to pick from, pick on one and hover over right middle side to start
2nd image - Gameplay basics
-Point + click to move
-Cursor changes for stuff you can actually interact with (Flashes orange for people and blue for objects used)
-Bottom text is descrptions of everyone and everything that happens (according to google translate)
-Hover over top to see those tabs, they're different "scenes" or "phases"
---from the left is title, during school, after school, hidden area (different for every girl), confession scene, and the last two are "viewing modes" for the girls you didn't pick (only for their hidden area scenes NOT for their after class scenes).
3rd image - H scene basics
-The H scenes are Hard to understand for people that don't understand japanese like me so let me simplify the best I can...
-You click on interactable things (flashing blue or orange cursor) and text bubbles (In japanese) pop up detailing what you do. HOWEVER, notice that the text looks different every time you click on the object, these are different H scenes.
-Unfortunately, this game requires a lot of trial and error to find what can be interacted with, what each text bubble means (helpful to know the kanji), and the order of how to do everything
--As for the interactable objects I've found, there's the girls themselves (2 to 3 scenes), the player (1-2 bj scenes i think), classroom desk near the middle (2 positions), Wall in under bridge area (2 positions), Both trees at middle behind the school, In stairwell there's on stairs (1 pos)and on ground (the ground one is a girl interaction and form there there's 2 positions)
-In the class room and other locations, there's a piece of paper or pair of bags that are the "X-Ray" toggle
--There's also a phone you can click on in the corner to see pixel art
And I think that is everything